/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-23 16:02:49,638 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-23 16:02:49,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-23 16:02:49,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-23 16:02:49,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-23 16:02:49,734 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-23 16:02:49,734 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-23 16:02:49,734 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-23 16:02:49,735 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-23 16:02:49,737 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-23 16:02:49,738 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-23 16:02:49,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-23 16:02:49,738 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-23 16:02:49,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-23 16:02:49,739 INFO L153 SettingsManager]: * Use SBE=true [2023-12-23 16:02:49,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-23 16:02:49,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-23 16:02:49,740 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-23 16:02:49,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-23 16:02:49,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-23 16:02:49,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-23 16:02:49,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-23 16:02:49,742 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-23 16:02:49,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-23 16:02:49,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-23 16:02:49,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:02:49,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-23 16:02:49,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-23 16:02:49,745 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-23 16:02:49,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-23 16:02:49,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-23 16:02:49,745 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-23 16:02:49,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-23 16:02:49,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-23 16:02:49,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-23 16:02:49,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-23 16:02:49,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-23 16:02:49,954 INFO L274 PluginConnector]: CDTParser initialized [2023-12-23 16:02:49,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i [2023-12-23 16:02:50,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-23 16:02:51,082 INFO L384 CDTParser]: Found 1 translation units. [2023-12-23 16:02:51,083 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i [2023-12-23 16:02:51,098 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998635410/61f0c2928d824ccabfd664e1be79c82b/FLAG71e88f4be [2023-12-23 16:02:51,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998635410/61f0c2928d824ccabfd664e1be79c82b [2023-12-23 16:02:51,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-23 16:02:51,110 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-23 16:02:51,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-23 16:02:51,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-23 16:02:51,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-23 16:02:51,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a11ee03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51, skipping insertion in model container [2023-12-23 16:02:51,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-23 16:02:51,261 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i[919,932] [2023-12-23 16:02:51,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:02:51,343 INFO L202 MainTranslator]: Completed pre-run [2023-12-23 16:02:51,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i[919,932] [2023-12-23 16:02:51,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-23 16:02:51,413 INFO L206 MainTranslator]: Completed translation [2023-12-23 16:02:51,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51 WrapperNode [2023-12-23 16:02:51,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-23 16:02:51,414 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-23 16:02:51,414 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-23 16:02:51,414 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-23 16:02:51,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,434 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,459 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 277 [2023-12-23 16:02:51,459 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-23 16:02:51,460 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-23 16:02:51,460 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-23 16:02:51,460 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-23 16:02:51,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,486 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-23 16:02:51,486 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,487 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,498 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,505 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,507 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,510 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-23 16:02:51,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-23 16:02:51,511 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-23 16:02:51,511 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-23 16:02:51,511 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (1/1) ... [2023-12-23 16:02:51,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-23 16:02:51,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-23 16:02:51,535 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) [2023-12-23 16:02:51,541 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 [2023-12-23 16:02:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-23 16:02:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-23 16:02:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-23 16:02:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-23 16:02:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-23 16:02:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-23 16:02:51,658 INFO L241 CfgBuilder]: Building ICFG [2023-12-23 16:02:51,660 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-23 16:03:02,226 INFO L282 CfgBuilder]: Performing block encoding [2023-12-23 16:03:02,254 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-23 16:03:02,254 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-23 16:03:02,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:03:02 BoogieIcfgContainer [2023-12-23 16:03:02,255 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-23 16:03:02,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-23 16:03:02,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-23 16:03:02,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-23 16:03:02,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:02:51" (1/3) ... [2023-12-23 16:03:02,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ee7659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:03:02, skipping insertion in model container [2023-12-23 16:03:02,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:02:51" (2/3) ... [2023-12-23 16:03:02,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23ee7659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:03:02, skipping insertion in model container [2023-12-23 16:03:02,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:03:02" (3/3) ... [2023-12-23 16:03:02,267 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-16.i [2023-12-23 16:03:02,279 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-23 16:03:02,279 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-23 16:03:02,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-23 16:03:02,331 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;@4f69e6a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-23 16:03:02,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-23 16:03:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 63 states have internal predecessors, (85), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-23 16:03:02,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-23 16:03:02,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:03:02,348 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:03:02,348 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:03:02,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:03:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1779572112, now seen corresponding path program 1 times [2023-12-23 16:03:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:03:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679048649] [2023-12-23 16:03:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:03:02,362 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 [2023-12-23 16:03:02,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:03:02,364 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) [2023-12-23 16:03:02,368 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 [2023-12-23 16:03:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:03:02,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-23 16:03:02,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:03:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 2960 proven. 0 refuted. 0 times theorem prover too weak. 2980 trivial. 0 not checked. [2023-12-23 16:03:02,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:03:02,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:03:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679048649] [2023-12-23 16:03:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679048649] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:03:02,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:03:02,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:03:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386128938] [2023-12-23 16:03:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:03:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-23 16:03:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:03:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-23 16:03:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:03:03,008 INFO L87 Difference]: Start difference. First operand has 120 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 63 states have internal predecessors, (85), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 16:03:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:03:03,807 INFO L93 Difference]: Finished difference Result 237 states and 443 transitions. [2023-12-23 16:03:03,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-23 16:03:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 326 [2023-12-23 16:03:03,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:03:03,839 INFO L225 Difference]: With dead ends: 237 [2023-12-23 16:03:03,839 INFO L226 Difference]: Without dead ends: 118 [2023-12-23 16:03:03,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-23 16:03:03,845 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-23 16:03:03,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-23 16:03:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-12-23 16:03:03,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-12-23 16:03:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 61 states have (on average 1.3114754098360655) internal successors, (80), 61 states have internal predecessors, (80), 55 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-12-23 16:03:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 190 transitions. [2023-12-23 16:03:03,884 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 190 transitions. Word has length 326 [2023-12-23 16:03:03,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:03:03,884 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 190 transitions. [2023-12-23 16:03:03,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2023-12-23 16:03:03,885 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 190 transitions. [2023-12-23 16:03:03,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-23 16:03:03,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:03:03,889 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:03:03,903 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 [2023-12-23 16:03:04,103 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 [2023-12-23 16:03:04,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:03:04,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:03:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1860019922, now seen corresponding path program 1 times [2023-12-23 16:03:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:03:04,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866874873] [2023-12-23 16:03:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:03:04,105 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 [2023-12-23 16:03:04,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:03:04,106 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) [2023-12-23 16:03:04,107 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 [2023-12-23 16:03:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:03:04,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 16:03:04,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:03:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 16:03:10,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:03:10,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:03:10,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866874873] [2023-12-23 16:03:10,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866874873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:03:10,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:03:10,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:03:10,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856950464] [2023-12-23 16:03:10,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:03:10,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:03:10,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:03:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:03:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:03:10,474 INFO L87 Difference]: Start difference. First operand 118 states and 190 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 16:03:12,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:12,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:03:12,160 INFO L93 Difference]: Finished difference Result 352 states and 568 transitions. [2023-12-23 16:03:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:03:12,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 326 [2023-12-23 16:03:12,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:03:12,164 INFO L225 Difference]: With dead ends: 352 [2023-12-23 16:03:12,164 INFO L226 Difference]: Without dead ends: 235 [2023-12-23 16:03:12,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:03:12,166 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 42 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-23 16:03:12,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 385 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-23 16:03:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-12-23 16:03:12,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2023-12-23 16:03:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 120 states have (on average 1.3083333333333333) internal successors, (157), 120 states have internal predecessors, (157), 110 states have call successors, (110), 2 states have call predecessors, (110), 2 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-23 16:03:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 377 transitions. [2023-12-23 16:03:12,215 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 377 transitions. Word has length 326 [2023-12-23 16:03:12,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:03:12,216 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 377 transitions. [2023-12-23 16:03:12,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 16:03:12,216 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 377 transitions. [2023-12-23 16:03:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-23 16:03:12,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:03:12,219 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:03:12,236 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 [2023-12-23 16:03:12,434 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 [2023-12-23 16:03:12,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:03:12,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:03:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1141218089, now seen corresponding path program 1 times [2023-12-23 16:03:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:03:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001320197] [2023-12-23 16:03:12,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:03:12,436 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 [2023-12-23 16:03:12,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:03:12,437 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) [2023-12-23 16:03:12,438 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 [2023-12-23 16:03:13,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:03:13,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-23 16:03:13,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:03:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5940 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5940 trivial. 0 not checked. [2023-12-23 16:03:19,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-23 16:03:19,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-23 16:03:19,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001320197] [2023-12-23 16:03:19,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001320197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-23 16:03:19,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-23 16:03:19,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-23 16:03:19,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624333782] [2023-12-23 16:03:19,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-23 16:03:19,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-23 16:03:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-23 16:03:19,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-23 16:03:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:03:19,817 INFO L87 Difference]: Start difference. First operand 233 states and 377 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 16:03:24,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:26,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:27,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:32,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:36,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-23 16:03:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-23 16:03:36,749 INFO L93 Difference]: Finished difference Result 697 states and 1129 transitions. [2023-12-23 16:03:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-23 16:03:36,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) Word has length 327 [2023-12-23 16:03:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-23 16:03:36,928 INFO L225 Difference]: With dead ends: 697 [2023-12-23 16:03:36,928 INFO L226 Difference]: Without dead ends: 465 [2023-12-23 16:03:36,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-23 16:03:36,930 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 41 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-23 16:03:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 363 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2023-12-23 16:03:36,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-12-23 16:03:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 463. [2023-12-23 16:03:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 238 states have (on average 1.3025210084033614) internal successors, (310), 238 states have internal predecessors, (310), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 220 states have call predecessors, (220), 220 states have call successors, (220) [2023-12-23 16:03:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 750 transitions. [2023-12-23 16:03:36,977 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 750 transitions. Word has length 327 [2023-12-23 16:03:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-23 16:03:36,978 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 750 transitions. [2023-12-23 16:03:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 1 states have call successors, (55), 1 states have call predecessors, (55), 1 states have return successors, (55), 1 states have call predecessors, (55), 1 states have call successors, (55) [2023-12-23 16:03:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 750 transitions. [2023-12-23 16:03:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-23 16:03:36,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-23 16:03:36,981 INFO L195 NwaCegarLoop]: trace histogram [55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-23 16:03:37,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-23 16:03:37,207 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 [2023-12-23 16:03:37,208 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-23 16:03:37,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-23 16:03:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1464805465, now seen corresponding path program 1 times [2023-12-23 16:03:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-23 16:03:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734713010] [2023-12-23 16:03:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-23 16:03:37,209 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 [2023-12-23 16:03:37,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-23 16:03:37,210 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) [2023-12-23 16:03:37,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-23 16:03:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-23 16:03:38,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-23 16:03:38,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-23 16:05:26,561 WARN L293 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)