/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-ci_file-81.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 12:42:31,483 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 12:42:31,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 12:42:31,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 12:42:31,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 12:42:31,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 12:42:31,544 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 12:42:31,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 12:42:31,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 12:42:31,545 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 12:42:31,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 12:42:31,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 12:42:31,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 12:42:31,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 12:42:31,546 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 12:42:31,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 12:42:31,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 12:42:31,547 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 12:42:31,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 12:42:31,548 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 12:42:31,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 12:42:31,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 12:42:31,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 12:42:31,551 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 12:42:31,552 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 12:42:31,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 12:42:31,552 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 12:42:31,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 12:42:31,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 12:42:31,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 12:42:31,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 12:42:31,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 12:42:31,554 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 12:42:31,554 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 12:42:31,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:42:31,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 12:42:31,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 12:42:31,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 12:42:31,555 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 12:42:31,555 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 12:42:31,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 12:42:31,558 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 12:42:31,558 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 12:42:31,559 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 12:42:31,559 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 12:42:31,559 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 12:42:31,559 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 12:42:31,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 12:42:31,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 12:42:31,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 12:42:31,745 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 12:42:31,745 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 12:42:31,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-81.i [2023-12-16 12:42:32,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 12:42:32,973 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 12:42:32,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-81.i [2023-12-16 12:42:32,979 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5673d6449/106e483d0e0c4c04abb99829499a8604/FLAG6d5a5057f [2023-12-16 12:42:32,988 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5673d6449/106e483d0e0c4c04abb99829499a8604 [2023-12-16 12:42:32,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 12:42:32,991 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 12:42:32,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 12:42:32,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 12:42:32,995 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 12:42:32,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:42:32" (1/1) ... [2023-12-16 12:42:32,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f13a8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:32, skipping insertion in model container [2023-12-16 12:42:32,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 12:42:32" (1/1) ... [2023-12-16 12:42:33,017 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 12:42:33,115 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-ci_file-81.i[919,932] [2023-12-16 12:42:33,167 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:42:33,178 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 12:42:33,187 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-ci_file-81.i[919,932] [2023-12-16 12:42:33,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 12:42:33,242 INFO L206 MainTranslator]: Completed translation [2023-12-16 12:42:33,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33 WrapperNode [2023-12-16 12:42:33,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 12:42:33,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 12:42:33,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 12:42:33,243 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 12:42:33,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,257 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,278 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202 [2023-12-16 12:42:33,278 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 12:42:33,279 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 12:42:33,279 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 12:42:33,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 12:42:33,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,296 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,313 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 12:42:33,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 12:42:33,330 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 12:42:33,330 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 12:42:33,330 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 12:42:33,331 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (1/1) ... [2023-12-16 12:42:33,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 12:42:33,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 12:42:33,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 12:42:33,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 12:42:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 12:42:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 12:42:33,375 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 12:42:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 12:42:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 12:42:33,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 12:42:33,469 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 12:42:33,471 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 12:42:34,344 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 12:42:34,396 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 12:42:34,396 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 12:42:34,396 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:42:34 BoogieIcfgContainer [2023-12-16 12:42:34,396 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 12:42:34,398 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 12:42:34,398 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 12:42:34,400 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 12:42:34,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 12:42:32" (1/3) ... [2023-12-16 12:42:34,401 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606a200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:42:34, skipping insertion in model container [2023-12-16 12:42:34,401 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 12:42:33" (2/3) ... [2023-12-16 12:42:34,402 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1606a200 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 12:42:34, skipping insertion in model container [2023-12-16 12:42:34,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 12:42:34" (3/3) ... [2023-12-16 12:42:34,402 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-81.i [2023-12-16 12:42:34,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 12:42:34,415 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 12:42:34,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 12:42:34,458 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;@1e5b801b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 12:42:34,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 12:42:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 12:42:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 12:42:34,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:34,474 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:34,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:34,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:34,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1062379435, now seen corresponding path program 1 times [2023-12-16 12:42:34,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:34,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406767073] [2023-12-16 12:42:34,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:34,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:34,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:34,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 12:42:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:34,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 12:42:34,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked. [2023-12-16 12:42:34,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:42:34,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:42:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406767073] [2023-12-16 12:42:34,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406767073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:42:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:42:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:42:34,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088809511] [2023-12-16 12:42:34,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:42:34,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 12:42:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:42:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 12:42:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:42:34,898 INFO L87 Difference]: Start difference. First operand has 84 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 12:42:34,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:42:34,944 INFO L93 Difference]: Finished difference Result 165 states and 301 transitions. [2023-12-16 12:42:34,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 12:42:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193 [2023-12-16 12:42:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:42:34,955 INFO L225 Difference]: With dead ends: 165 [2023-12-16 12:42:34,955 INFO L226 Difference]: Without dead ends: 82 [2023-12-16 12:42:34,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 12:42:34,960 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 12:42:34,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 12:42:34,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-12-16 12:42:34,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-12-16 12:42:34,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 49 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 12:42:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 131 transitions. [2023-12-16 12:42:34,995 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 131 transitions. Word has length 193 [2023-12-16 12:42:34,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:42:34,996 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 131 transitions. [2023-12-16 12:42:34,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 12:42:34,996 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 131 transitions. [2023-12-16 12:42:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 12:42:35,003 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:35,004 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:35,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 12:42:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:35,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:35,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1701904459, now seen corresponding path program 1 times [2023-12-16 12:42:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:35,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076258587] [2023-12-16 12:42:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:35,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:35,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:35,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 12:42:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:35,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 12:42:35,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 12:42:35,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 12:42:35,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:42:35,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076258587] [2023-12-16 12:42:35,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076258587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 12:42:35,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 12:42:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 12:42:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648163061] [2023-12-16 12:42:35,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:42:35,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 12:42:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:42:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 12:42:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:42:35,895 INFO L87 Difference]: Start difference. First operand 82 states and 131 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 12:42:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:42:35,990 INFO L93 Difference]: Finished difference Result 237 states and 382 transitions. [2023-12-16 12:42:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 12:42:35,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193 [2023-12-16 12:42:35,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:42:35,993 INFO L225 Difference]: With dead ends: 237 [2023-12-16 12:42:35,994 INFO L226 Difference]: Without dead ends: 156 [2023-12-16 12:42:35,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 12:42:35,995 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 32 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 12:42:35,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 246 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 12:42:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-12-16 12:42:36,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 141. [2023-12-16 12:42:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 76 states have internal predecessors, (100), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 12:42:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 224 transitions. [2023-12-16 12:42:36,045 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 224 transitions. Word has length 193 [2023-12-16 12:42:36,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:42:36,046 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 224 transitions. [2023-12-16 12:42:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 12:42:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 224 transitions. [2023-12-16 12:42:36,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-16 12:42:36,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:36,048 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:36,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 12:42:36,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:36,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:36,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash -722859508, now seen corresponding path program 1 times [2023-12-16 12:42:36,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:36,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243789480] [2023-12-16 12:42:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:36,261 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:36,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 12:42:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:36,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 12:42:36,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2023-12-16 12:42:37,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:42:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-12-16 12:42:37,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:42:37,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243789480] [2023-12-16 12:42:37,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243789480] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 12:42:37,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:42:37,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-12-16 12:42:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949309665] [2023-12-16 12:42:37,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:42:37,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 12:42:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:42:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 12:42:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-16 12:42:37,583 INFO L87 Difference]: Start difference. First operand 141 states and 224 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) [2023-12-16 12:42:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:42:39,671 INFO L93 Difference]: Finished difference Result 338 states and 528 transitions. [2023-12-16 12:42:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 12:42:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) Word has length 194 [2023-12-16 12:42:39,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:42:39,675 INFO L225 Difference]: With dead ends: 338 [2023-12-16 12:42:39,675 INFO L226 Difference]: Without dead ends: 257 [2023-12-16 12:42:39,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2023-12-16 12:42:39,677 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 358 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 12:42:39,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 697 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 12:42:39,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-12-16 12:42:39,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 149. [2023-12-16 12:42:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 82 states have internal predecessors, (105), 62 states have call successors, (62), 4 states have call predecessors, (62), 4 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 12:42:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 229 transitions. [2023-12-16 12:42:39,701 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 229 transitions. Word has length 194 [2023-12-16 12:42:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:42:39,701 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 229 transitions. [2023-12-16 12:42:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 4 states have call successors, (62), 3 states have call predecessors, (62), 4 states have return successors, (62), 2 states have call predecessors, (62), 4 states have call successors, (62) [2023-12-16 12:42:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 229 transitions. [2023-12-16 12:42:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-16 12:42:39,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:39,703 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:39,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 12:42:39,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:39,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:39,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:39,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1115886518, now seen corresponding path program 1 times [2023-12-16 12:42:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:39,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062159806] [2023-12-16 12:42:39,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:39,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:39,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:39,917 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:39,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 12:42:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:40,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 12:42:40,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-16 12:42:40,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:42:40,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:42:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062159806] [2023-12-16 12:42:40,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062159806] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:42:40,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1604115196] [2023-12-16 12:42:40,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:40,479 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-16 12:42:40,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-16 12:42:40,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-16 12:42:40,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-16 12:42:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:41,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:42:41,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2023-12-16 12:42:41,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:42:41,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1604115196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 12:42:41,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 12:42:41,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-12-16 12:42:41,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993166821] [2023-12-16 12:42:41,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 12:42:41,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 12:42:41,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:42:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 12:42:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-16 12:42:41,476 INFO L87 Difference]: Start difference. First operand 149 states and 229 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 12:42:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:42:42,218 INFO L93 Difference]: Finished difference Result 261 states and 397 transitions. [2023-12-16 12:42:42,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 12:42:42,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 194 [2023-12-16 12:42:42,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:42:42,225 INFO L225 Difference]: With dead ends: 261 [2023-12-16 12:42:42,225 INFO L226 Difference]: Without dead ends: 176 [2023-12-16 12:42:42,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-12-16 12:42:42,226 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 116 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 12:42:42,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 459 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 12:42:42,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-16 12:42:42,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 157. [2023-12-16 12:42:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 88 states have (on average 1.25) internal successors, (110), 88 states have internal predecessors, (110), 62 states have call successors, (62), 6 states have call predecessors, (62), 6 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-16 12:42:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 234 transitions. [2023-12-16 12:42:42,250 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 234 transitions. Word has length 194 [2023-12-16 12:42:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:42:42,251 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 234 transitions. [2023-12-16 12:42:42,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2023-12-16 12:42:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 234 transitions. [2023-12-16 12:42:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 12:42:42,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:42,253 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:42,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 12:42:42,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-16 12:42:42,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-16 12:42:42,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:42,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:42,663 INFO L85 PathProgramCache]: Analyzing trace with hash -233759341, now seen corresponding path program 1 times [2023-12-16 12:42:42,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:42,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67871392] [2023-12-16 12:42:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:42,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:42,664 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:42,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 12:42:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:42,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 12:42:42,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 12:42:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 540 proven. 75 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked. [2023-12-16 12:42:43,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 12:42:43,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2023-12-16 12:42:43,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 12:42:43,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67871392] [2023-12-16 12:42:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67871392] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 12:42:43,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 12:42:43,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-16 12:42:43,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693560694] [2023-12-16 12:42:43,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 12:42:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 12:42:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 12:42:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 12:42:43,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:42:43,259 INFO L87 Difference]: Start difference. First operand 157 states and 234 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 12:42:43,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 12:42:43,434 INFO L93 Difference]: Finished difference Result 291 states and 433 transitions. [2023-12-16 12:42:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 12:42:43,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 195 [2023-12-16 12:42:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 12:42:43,436 INFO L225 Difference]: With dead ends: 291 [2023-12-16 12:42:43,436 INFO L226 Difference]: Without dead ends: 199 [2023-12-16 12:42:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 12:42:43,437 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 85 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 12:42:43,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 252 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 12:42:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-16 12:42:43,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 196. [2023-12-16 12:42:43,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 121 states have (on average 1.2644628099173554) internal successors, (153), 122 states have internal predecessors, (153), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2023-12-16 12:42:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 285 transitions. [2023-12-16 12:42:43,455 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 285 transitions. Word has length 195 [2023-12-16 12:42:43,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 12:42:43,457 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 285 transitions. [2023-12-16 12:42:43,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2023-12-16 12:42:43,457 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 285 transitions. [2023-12-16 12:42:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-16 12:42:43,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 12:42:43,458 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 12:42:43,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 12:42:43,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:43,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 12:42:43,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 12:42:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash -233699759, now seen corresponding path program 1 times [2023-12-16 12:42:43,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 12:42:43,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747467735] [2023-12-16 12:42:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 12:42:43,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 12:42:43,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 12:42:43,669 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 12:42:43,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-16 12:42:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 12:42:43,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 12:42:43,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 12:43:30,755 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:43:30,755 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 12:43:31,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-16 12:43:31,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown