/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_loopvsstraightlinecode_25-1loop_file-58.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 00:36:31,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 00:36:31,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 00:36:31,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 00:36:31,946 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 00:36:31,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 00:36:31,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 00:36:31,960 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 00:36:31,961 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 00:36:31,961 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 00:36:31,961 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 00:36:31,961 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 00:36:31,962 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 00:36:31,962 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 00:36:31,962 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 00:36:31,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 00:36:31,963 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 00:36:31,963 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 00:36:31,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 00:36:31,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 00:36:31,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 00:36:31,964 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 00:36:31,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 00:36:31,964 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 00:36:31,964 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 00:36:31,965 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 00:36:31,965 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 00:36:31,965 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 00:36:31,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 00:36:31,966 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 00:36:31,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 00:36:31,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 00:36:31,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 00:36:31,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 00:36:31,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 00:36:31,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 00:36:31,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 00:36:31,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 00:36:31,968 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 00:36:31,968 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 00:36:31,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 00:36:31,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 00:36:31,968 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 00:36:31,969 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 00:36:31,969 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 00:36:31,969 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 00:36:31,969 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 00:36:32,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 00:36:32,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 00:36:32,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 00:36:32,155 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 00:36:32,156 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 00:36:32,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-58.i [2023-12-24 00:36:33,291 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 00:36:33,477 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 00:36:33,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-58.i [2023-12-24 00:36:33,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118e83349/67ecaa40ad6e407a9975f03e889ebafb/FLAG63bbdac94 [2023-12-24 00:36:33,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/118e83349/67ecaa40ad6e407a9975f03e889ebafb [2023-12-24 00:36:33,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 00:36:33,499 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 00:36:33,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 00:36:33,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 00:36:33,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 00:36:33,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,506 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0dce33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33, skipping insertion in model container [2023-12-24 00:36:33,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 00:36:33,647 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_loopvsstraightlinecode_25-1loop_file-58.i[915,928] [2023-12-24 00:36:33,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 00:36:33,681 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 00:36:33,694 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_loopvsstraightlinecode_25-1loop_file-58.i[915,928] [2023-12-24 00:36:33,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 00:36:33,719 INFO L206 MainTranslator]: Completed translation [2023-12-24 00:36:33,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33 WrapperNode [2023-12-24 00:36:33,720 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 00:36:33,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 00:36:33,721 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 00:36:33,721 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 00:36:33,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,752 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-24 00:36:33,752 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 00:36:33,753 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 00:36:33,753 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 00:36:33,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 00:36:33,761 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,776 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]. [2023-12-24 00:36:33,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,790 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 00:36:33,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 00:36:33,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 00:36:33,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 00:36:33,793 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (1/1) ... [2023-12-24 00:36:33,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 00:36:33,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 00:36:33,829 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) [2023-12-24 00:36:33,834 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 [2023-12-24 00:36:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 00:36:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 00:36:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 00:36:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 00:36:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 00:36:33,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 00:36:33,901 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 00:36:33,903 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 00:36:34,191 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 00:36:34,225 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 00:36:34,225 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 00:36:34,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:36:34 BoogieIcfgContainer [2023-12-24 00:36:34,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 00:36:34,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 00:36:34,228 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 00:36:34,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 00:36:34,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 12:36:33" (1/3) ... [2023-12-24 00:36:34,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25528071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:36:34, skipping insertion in model container [2023-12-24 00:36:34,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 12:36:33" (2/3) ... [2023-12-24 00:36:34,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25528071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 12:36:34, skipping insertion in model container [2023-12-24 00:36:34,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 12:36:34" (3/3) ... [2023-12-24 00:36:34,242 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-58.i [2023-12-24 00:36:34,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 00:36:34,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 00:36:34,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 00:36:34,290 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;@30e957c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 00:36:34,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 00:36:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 00:36:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 00:36:34,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:36:34,301 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:36:34,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:36:34,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:36:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 399837782, now seen corresponding path program 1 times [2023-12-24 00:36:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:36:34,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190191782] [2023-12-24 00:36:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:36:34,325 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 [2023-12-24 00:36:34,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:36:34,342 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) [2023-12-24 00:36:34,343 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 [2023-12-24 00:36:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:36:34,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 00:36:34,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:36:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-12-24 00:36:34,530 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 00:36:34,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:36:34,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190191782] [2023-12-24 00:36:34,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190191782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 00:36:34,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 00:36:34,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 00:36:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992496707] [2023-12-24 00:36:34,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 00:36:34,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 00:36:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:36:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 00:36:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 00:36:34,573 INFO L87 Difference]: Start difference. First operand has 39 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:36:34,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:36:34,697 INFO L93 Difference]: Finished difference Result 77 states and 129 transitions. [2023-12-24 00:36:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 00:36:34,699 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-12-24 00:36:34,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:36:34,705 INFO L225 Difference]: With dead ends: 77 [2023-12-24 00:36:34,705 INFO L226 Difference]: Without dead ends: 37 [2023-12-24 00:36:34,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 00:36:34,710 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-24 00:36:34,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-24 00:36:34,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-24 00:36:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-12-24 00:36:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-24 00:36:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2023-12-24 00:36:34,753 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 77 [2023-12-24 00:36:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:36:34,754 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2023-12-24 00:36:34,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 1 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:36:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2023-12-24 00:36:34,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 00:36:34,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:36:34,756 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:36:34,779 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 [2023-12-24 00:36:34,960 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 [2023-12-24 00:36:34,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:36:34,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:36:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash 669434002, now seen corresponding path program 1 times [2023-12-24 00:36:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:36:34,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492635119] [2023-12-24 00:36:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:36:34,962 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 [2023-12-24 00:36:34,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:36:34,963 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) [2023-12-24 00:36:34,964 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 [2023-12-24 00:36:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:36:35,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 00:36:35,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:36:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-24 00:36:36,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:36:49,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:36:49,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492635119] [2023-12-24 00:36:49,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492635119] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:36:49,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567634591] [2023-12-24 00:36:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:36:49,108 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 00:36:49,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 00:36:49,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 00:36:49,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-24 00:36:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:36:49,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-24 00:36:49,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:37:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:37:10,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:37:31,429 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 95 DAG size of output: 94 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:39:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567634591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:39:25,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 00:39:25,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2023-12-24 00:39:25,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867783662] [2023-12-24 00:39:25,172 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 00:39:25,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-24 00:39:25,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:39:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-24 00:39:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1676, Unknown=0, NotChecked=0, Total=1892 [2023-12-24 00:39:25,175 INFO L87 Difference]: Start difference. First operand 37 states and 54 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 00:40:31,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:40:31,106 INFO L93 Difference]: Finished difference Result 145 states and 194 transitions. [2023-12-24 00:40:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-24 00:40:31,107 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 77 [2023-12-24 00:40:31,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:40:31,108 INFO L225 Difference]: With dead ends: 145 [2023-12-24 00:40:31,108 INFO L226 Difference]: Without dead ends: 109 [2023-12-24 00:40:31,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 176.6s TimeCoverageRelationStatistics Valid=743, Invalid=4087, Unknown=0, NotChecked=0, Total=4830 [2023-12-24 00:40:31,111 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 182 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-24 00:40:31,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 324 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-12-24 00:40:31,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-24 00:40:31,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 82. [2023-12-24 00:40:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.16) internal successors, (58), 50 states have internal predecessors, (58), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:40:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2023-12-24 00:40:31,126 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 77 [2023-12-24 00:40:31,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:40:31,126 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2023-12-24 00:40:31,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (24), 6 states have call predecessors, (24), 9 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-24 00:40:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2023-12-24 00:40:31,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 00:40:31,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:40:31,127 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:40:31,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-24 00:40:31,338 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 [2023-12-24 00:40:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 [2023-12-24 00:40:31,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:40:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:40:31,533 INFO L85 PathProgramCache]: Analyzing trace with hash -139912624, now seen corresponding path program 1 times [2023-12-24 00:40:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:40:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388195127] [2023-12-24 00:40:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:40:31,533 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 [2023-12-24 00:40:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:40:31,534 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) [2023-12-24 00:40:31,536 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 [2023-12-24 00:40:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:40:31,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 00:40:31,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:40:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-24 00:40:41,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:40:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 00:40:57,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:40:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388195127] [2023-12-24 00:40:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388195127] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 00:40:57,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 00:40:57,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 27 [2023-12-24 00:40:57,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579174799] [2023-12-24 00:40:57,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 00:40:57,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 00:40:57,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:40:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 00:40:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-12-24 00:40:57,885 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:41:04,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:41:04,458 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2023-12-24 00:41:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 00:41:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-12-24 00:41:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:41:04,471 INFO L225 Difference]: With dead ends: 119 [2023-12-24 00:41:04,471 INFO L226 Difference]: Without dead ends: 117 [2023-12-24 00:41:04,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 00:41:04,472 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 100 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-24 00:41:04,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 155 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-24 00:41:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-24 00:41:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2023-12-24 00:41:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:41:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2023-12-24 00:41:04,485 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 77 [2023-12-24 00:41:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:41:04,485 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2023-12-24 00:41:04,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:41:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2023-12-24 00:41:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 00:41:04,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:41:04,486 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:41:04,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-24 00:41:04,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:41:04,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:41:04,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:41:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash -139853042, now seen corresponding path program 1 times [2023-12-24 00:41:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:41:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207489034] [2023-12-24 00:41:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:41:04,690 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 [2023-12-24 00:41:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:41:04,691 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 00:41:04,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-24 00:41:04,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:41:04,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-24 00:41:04,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:41:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 177 proven. 24 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-24 00:41:14,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:42:24,977 WARN L293 SmtUtils]: Spent 44.42s on a formula simplification. DAG size of input: 102 DAG size of output: 100 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:42:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 00:42:31,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:42:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207489034] [2023-12-24 00:42:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207489034] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 00:42:31,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 00:42:31,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 26 [2023-12-24 00:42:31,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626562946] [2023-12-24 00:42:31,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 00:42:31,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 00:42:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:42:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 00:42:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2023-12-24 00:42:31,172 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:42:56,909 WARN L293 SmtUtils]: Spent 22.93s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:42:59,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:42:59,086 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2023-12-24 00:42:59,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-24 00:42:59,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-12-24 00:42:59,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:42:59,099 INFO L225 Difference]: With dead ends: 115 [2023-12-24 00:42:59,099 INFO L226 Difference]: Without dead ends: 113 [2023-12-24 00:42:59,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 82.4s TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2023-12-24 00:42:59,100 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 74 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-24 00:42:59,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 235 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-24 00:42:59,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-24 00:42:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2023-12-24 00:42:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:42:59,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2023-12-24 00:42:59,110 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 77 [2023-12-24 00:42:59,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:42:59,110 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2023-12-24 00:42:59,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:42:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2023-12-24 00:42:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-24 00:42:59,111 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:42:59,111 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:42:59,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-24 00:42:59,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:42:59,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:42:59,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:42:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash -657065648, now seen corresponding path program 1 times [2023-12-24 00:42:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:42:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715466505] [2023-12-24 00:42:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:42:59,316 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 [2023-12-24 00:42:59,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:42:59,317 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) [2023-12-24 00:42:59,318 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 [2023-12-24 00:42:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:42:59,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 00:42:59,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:43:07,928 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:43:07,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:43:32,449 WARN L293 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:44:32,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:44:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715466505] [2023-12-24 00:44:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715466505] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:44:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138772477] [2023-12-24 00:44:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:44:32,644 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 00:44:32,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 00:44:32,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 00:44:32,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-24 00:44:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:44:32,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 00:44:32,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:45:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:45:02,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:45:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1138772477] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:45:34,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 00:45:34,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-12-24 00:45:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923683140] [2023-12-24 00:45:34,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 00:45:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-24 00:45:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:45:34,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-24 00:45:34,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=864, Unknown=1, NotChecked=0, Total=1056 [2023-12-24 00:45:34,732 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 00:45:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:45:53,048 INFO L93 Difference]: Finished difference Result 173 states and 232 transitions. [2023-12-24 00:45:53,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-24 00:45:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 77 [2023-12-24 00:45:53,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:45:53,050 INFO L225 Difference]: With dead ends: 173 [2023-12-24 00:45:53,050 INFO L226 Difference]: Without dead ends: 128 [2023-12-24 00:45:53,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 97.9s TimeCoverageRelationStatistics Valid=446, Invalid=1809, Unknown=1, NotChecked=0, Total=2256 [2023-12-24 00:45:53,052 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 176 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-24 00:45:53,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 357 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-24 00:45:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-12-24 00:45:53,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2023-12-24 00:45:53,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:45:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2023-12-24 00:45:53,061 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 77 [2023-12-24 00:45:53,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:45:53,061 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2023-12-24 00:45:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 00:45:53,062 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2023-12-24 00:45:53,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 00:45:53,063 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:45:53,063 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:45:53,072 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 (7)] Ended with exit code 0 [2023-12-24 00:45:53,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-12-24 00:45:53,463 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=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 00:45:53,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:45:53,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:45:53,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1613542393, now seen corresponding path program 1 times [2023-12-24 00:45:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:45:53,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580182635] [2023-12-24 00:45:53,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:45:53,465 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 [2023-12-24 00:45:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:45:53,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 00:45:53,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-24 00:45:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:45:53,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 00:45:53,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:46:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-24 00:46:07,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:46:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 00:46:24,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:46:24,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580182635] [2023-12-24 00:46:24,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580182635] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 00:46:24,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 00:46:24,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19] total 27 [2023-12-24 00:46:24,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318249924] [2023-12-24 00:46:24,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 00:46:24,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 00:46:24,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:46:24,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 00:46:24,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2023-12-24 00:46:24,343 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:46:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:46:32,700 INFO L93 Difference]: Finished difference Result 133 states and 170 transitions. [2023-12-24 00:46:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-24 00:46:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-12-24 00:46:32,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:46:32,714 INFO L225 Difference]: With dead ends: 133 [2023-12-24 00:46:32,714 INFO L226 Difference]: Without dead ends: 131 [2023-12-24 00:46:32,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=213, Invalid=977, Unknown=0, NotChecked=0, Total=1190 [2023-12-24 00:46:32,716 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 60 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-24 00:46:32,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 212 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-24 00:46:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-12-24 00:46:32,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 99. [2023-12-24 00:46:32,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:46:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2023-12-24 00:46:32,726 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 78 [2023-12-24 00:46:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:46:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2023-12-24 00:46:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:46:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2023-12-24 00:46:32,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 00:46:32,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:46:32,729 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:46:32,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-24 00:46:32,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:46:32,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:46:32,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:46:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1670800695, now seen corresponding path program 1 times [2023-12-24 00:46:32,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:46:32,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200926119] [2023-12-24 00:46:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:46:32,933 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 [2023-12-24 00:46:32,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:46:32,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 00:46:32,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-24 00:46:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:46:33,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-24 00:46:33,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:46:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 179 proven. 39 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-12-24 00:46:41,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:46:59,782 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-24 00:46:59,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:46:59,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200926119] [2023-12-24 00:46:59,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200926119] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-24 00:46:59,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-24 00:46:59,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 29 [2023-12-24 00:46:59,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513992565] [2023-12-24 00:46:59,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 00:46:59,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-24 00:46:59,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:46:59,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-24 00:46:59,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2023-12-24 00:46:59,784 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:47:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:47:06,725 INFO L93 Difference]: Finished difference Result 129 states and 166 transitions. [2023-12-24 00:47:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-24 00:47:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2023-12-24 00:47:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:47:06,738 INFO L225 Difference]: With dead ends: 129 [2023-12-24 00:47:06,739 INFO L226 Difference]: Without dead ends: 127 [2023-12-24 00:47:06,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=256, Invalid=1076, Unknown=0, NotChecked=0, Total=1332 [2023-12-24 00:47:06,739 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 81 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-24 00:47:06,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 161 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-24 00:47:06,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-12-24 00:47:06,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2023-12-24 00:47:06,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:47:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2023-12-24 00:47:06,752 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 78 [2023-12-24 00:47:06,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:47:06,752 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2023-12-24 00:47:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-24 00:47:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2023-12-24 00:47:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 00:47:06,753 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:47:06,753 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:47:06,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-24 00:47:06,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 00:47:06,961 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:47:06,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:47:06,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1533299463, now seen corresponding path program 1 times [2023-12-24 00:47:06,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:47:06,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007675901] [2023-12-24 00:47:06,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:47:06,962 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 [2023-12-24 00:47:06,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:47:06,963 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-12-24 00:47:06,964 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 (11)] Waiting until timeout for monitored process [2023-12-24 00:47:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:47:07,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 00:47:07,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:47:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:47:19,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:47:44,370 WARN L293 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 99 DAG size of output: 98 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-24 00:48:52,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 00:48:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007675901] [2023-12-24 00:48:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007675901] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:48:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [746998436] [2023-12-24 00:48:52,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:48:52,381 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-24 00:48:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-12-24 00:48:52,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-24 00:48:52,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-24 00:48:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:48:52,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-24 00:48:52,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:49:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:49:28,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-24 00:50:35,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [746998436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-24 00:50:35,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-24 00:50:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2023-12-24 00:50:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927318844] [2023-12-24 00:50:35,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-24 00:50:35,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-24 00:50:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 00:50:35,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-24 00:50:35,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2023-12-24 00:50:35,127 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 00:50:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 00:50:57,772 INFO L93 Difference]: Finished difference Result 126 states and 159 transitions. [2023-12-24 00:50:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-24 00:50:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 78 [2023-12-24 00:50:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 00:50:57,773 INFO L225 Difference]: With dead ends: 126 [2023-12-24 00:50:57,773 INFO L226 Difference]: Without dead ends: 124 [2023-12-24 00:50:57,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 139.8s TimeCoverageRelationStatistics Valid=511, Invalid=2141, Unknown=0, NotChecked=0, Total=2652 [2023-12-24 00:50:57,775 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 113 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-24 00:50:57,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 346 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-24 00:50:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-12-24 00:50:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 97. [2023-12-24 00:50:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-24 00:50:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2023-12-24 00:50:57,783 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 78 [2023-12-24 00:50:57,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 00:50:57,783 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2023-12-24 00:50:57,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 4 states have call successors, (24), 4 states have call predecessors, (24), 6 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2023-12-24 00:50:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2023-12-24 00:50:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-24 00:50:57,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 00:50:57,784 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:50:57,796 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 (11)] Forceful destruction successful, exit code 0 [2023-12-24 00:50:57,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2023-12-24 00:50:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /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=3,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-12-24 00:50:58,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 00:50:58,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 00:50:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1476041161, now seen corresponding path program 1 times [2023-12-24 00:50:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 00:50:58,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419968543] [2023-12-24 00:50:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 00:50:58,195 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 [2023-12-24 00:50:58,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 00:50:58,196 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-12-24 00:50:58,198 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 (13)] Waiting until timeout for monitored process [2023-12-24 00:50:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 00:50:58,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-24 00:50:58,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 00:51:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 101 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-24 00:51:06,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-24 00:51:11,861 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 [2023-12-24 00:51:11,870 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 (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-24 00:51:11,907 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-24 00:51:11,914 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 (13)] Forceful destruction successful, exit code 0 [2023-12-24 00:51:12,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-12-24 00:51:12,108 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 79 with TraceHistMax 12,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-5-2-1 context. [2023-12-24 00:51:12,112 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 00:51:12,113 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-24 00:51:12,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.12 12:51:12 BoogieIcfgContainer [2023-12-24 00:51:12,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-24 00:51:12,115 INFO L158 Benchmark]: Toolchain (without parser) took 878615.71ms. Allocated memory was 289.4MB in the beginning and 926.9MB in the end (delta: 637.5MB). Free memory was 236.0MB in the beginning and 758.6MB in the end (delta: -522.6MB). Peak memory consumption was 551.6MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,115 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory was 132.2MB in the beginning and 132.1MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-24 00:51:12,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.08ms. Allocated memory is still 289.4MB. Free memory was 236.0MB in the beginning and 222.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.44ms. Allocated memory is still 289.4MB. Free memory was 222.9MB in the beginning and 220.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,116 INFO L158 Benchmark]: Boogie Preprocessor took 37.13ms. Allocated memory is still 289.4MB. Free memory was 220.8MB in the beginning and 218.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,116 INFO L158 Benchmark]: RCFGBuilder took 433.66ms. Allocated memory is still 289.4MB. Free memory was 218.7MB in the beginning and 199.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,116 INFO L158 Benchmark]: TraceAbstraction took 877887.15ms. Allocated memory was 289.4MB in the beginning and 926.9MB in the end (delta: 637.5MB). Free memory was 199.3MB in the beginning and 758.6MB in the end (delta: -559.3MB). Peak memory consumption was 514.9MB. Max. memory is 8.0GB. [2023-12-24 00:51:12,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory was 132.2MB in the beginning and 132.1MB in the end (delta: 150.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.08ms. Allocated memory is still 289.4MB. Free memory was 236.0MB in the beginning and 222.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.44ms. Allocated memory is still 289.4MB. Free memory was 222.9MB in the beginning and 220.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.13ms. Allocated memory is still 289.4MB. Free memory was 220.8MB in the beginning and 218.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 433.66ms. Allocated memory is still 289.4MB. Free memory was 218.7MB in the beginning and 199.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 877887.15ms. Allocated memory was 289.4MB in the beginning and 926.9MB in the end (delta: 637.5MB). Free memory was 199.3MB in the beginning and 758.6MB in the end (delta: -559.3MB). Peak memory consumption was 514.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 79 with TraceHistMax 12,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-5-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 877.8s, OverallIterations: 9, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 156.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 786 SdHoareTripleChecker+Valid, 22.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 786 mSDsluCounter, 1841 SdHoareTripleChecker+Invalid, 20.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1532 mSDsCounter, 318 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2152 IncrementalHoareTripleChecker+Invalid, 2470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 318 mSolverCounterUnsat, 309 mSDtfsCounter, 2152 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1304 GetRequests, 1006 SyntacticMatches, 3 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3880 ImplicationChecksByTransitivity, 534.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, InterpolantAutomatonStates: 133, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 196 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 703.1s InterpolantComputationTime, 851 NumberOfCodeBlocks, 851 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1146 ConstructedInterpolants, 1 QuantifiedInterpolants, 10788 SizeOfPredicates, 205 NumberOfNonLiveVariables, 1496 ConjunctsInSsa, 217 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 3750/3960 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown