/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver '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' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-df9f019-m [2024-11-05 19:26:34,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 19:26:34,461 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-05 19:26:34,466 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 19:26:34,466 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 19:26:34,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 19:26:34,492 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 19:26:34,492 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 19:26:34,493 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 19:26:34,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 19:26:34,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 19:26:34,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 19:26:34,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 19:26:34,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 19:26:34,497 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 19:26:34,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 19:26:34,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 19:26:34,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-05 19:26:34,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-05 19:26:34,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 19:26:34,498 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 19:26:34,499 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 19:26:34,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-05 19:26:34,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 19:26:34,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 19:26:34,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 19:26:34,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 19:26:34,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:26:34,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 19:26:34,501 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 19:26:34,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 19:26:34,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 19:26:34,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 19:26:34,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 19:26:34,503 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:34,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 19:26:34,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 19:26:34,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 19:26:34,703 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 19:26:34,704 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 19:26:34,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i [2024-11-05 19:26:35,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 19:26:36,119 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 19:26:36,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i [2024-11-05 19:26:36,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40d7cade/6797e6dfaf4440a382978aa517052e33/FLAG1a1bb6b60 [2024-11-05 19:26:36,517 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40d7cade/6797e6dfaf4440a382978aa517052e33 [2024-11-05 19:26:36,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 19:26:36,520 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 19:26:36,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 19:26:36,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 19:26:36,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 19:26:36,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f124d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36, skipping insertion in model container [2024-11-05 19:26:36,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 19:26:36,686 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i[916,929] [2024-11-05 19:26:36,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:26:36,780 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 19:26:36,790 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-54.i[916,929] [2024-11-05 19:26:36,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 19:26:36,837 INFO L204 MainTranslator]: Completed translation [2024-11-05 19:26:36,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36 WrapperNode [2024-11-05 19:26:36,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 19:26:36,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 19:26:36,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 19:26:36,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 19:26:36,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,881 INFO L138 Inliner]: procedures = 27, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 246 [2024-11-05 19:26:36,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 19:26:36,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 19:26:36,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 19:26:36,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 19:26:36,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,893 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,904 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-05 19:26:36,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,915 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,923 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 19:26:36,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 19:26:36,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 19:26:36,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 19:26:36,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (1/1) ... [2024-11-05 19:26:36,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 19:26:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 19:26:36,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 19:26:36,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 19:26:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 19:26:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 19:26:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 19:26:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 19:26:36,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 19:26:36,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 19:26:37,062 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 19:26:37,063 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 19:26:38,038 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-05 19:26:38,039 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 19:26:38,050 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 19:26:38,051 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 19:26:38,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:26:38 BoogieIcfgContainer [2024-11-05 19:26:38,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 19:26:38,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 19:26:38,053 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 19:26:38,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 19:26:38,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 07:26:36" (1/3) ... [2024-11-05 19:26:38,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d835565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:26:38, skipping insertion in model container [2024-11-05 19:26:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 07:26:36" (2/3) ... [2024-11-05 19:26:38,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d835565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 07:26:38, skipping insertion in model container [2024-11-05 19:26:38,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 07:26:38" (3/3) ... [2024-11-05 19:26:38,058 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-54.i [2024-11-05 19:26:38,072 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 19:26:38,072 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 19:26:38,118 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 19:26:38,122 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2111b7fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 19:26:38,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 19:26:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-05 19:26:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-05 19:26:38,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:38,156 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:38,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:38,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1763384431, now seen corresponding path program 1 times [2024-11-05 19:26:38,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:38,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [190948367] [2024-11-05 19:26:38,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:38,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:38,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:38,176 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 19:26:38,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-05 19:26:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:38,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 19:26:38,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-05 19:26:38,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:38,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-05 19:26:38,858 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:38,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [190948367] [2024-11-05 19:26:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [190948367] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 19:26:38,858 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 19:26:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 19:26:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269743642] [2024-11-05 19:26:38,863 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 19:26:38,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 19:26:38,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 19:26:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 19:26:38,882 INFO L87 Difference]: Start difference. First operand has 113 states, 66 states have (on average 1.393939393939394) internal successors, (92), 67 states have internal predecessors, (92), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-05 19:26:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:38,907 INFO L93 Difference]: Finished difference Result 219 states and 398 transitions. [2024-11-05 19:26:38,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 19:26:38,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 269 [2024-11-05 19:26:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:38,919 INFO L225 Difference]: With dead ends: 219 [2024-11-05 19:26:38,919 INFO L226 Difference]: Without dead ends: 109 [2024-11-05 19:26:38,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 19:26:38,927 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:38,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 19:26:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-05 19:26:38,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-05 19:26:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 63 states have internal predecessors, (84), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-05 19:26:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 172 transitions. [2024-11-05 19:26:38,969 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 172 transitions. Word has length 269 [2024-11-05 19:26:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:38,970 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 172 transitions. [2024-11-05 19:26:38,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2024-11-05 19:26:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 172 transitions. [2024-11-05 19:26:38,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-05 19:26:38,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:38,974 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:38,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-05 19:26:39,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:39,179 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:39,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 935944368, now seen corresponding path program 1 times [2024-11-05 19:26:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:39,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73840744] [2024-11-05 19:26:39,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:39,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:39,184 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) [2024-11-05 19:26:39,185 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 [2024-11-05 19:26:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:39,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-05 19:26:39,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1929 proven. 60 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2024-11-05 19:26:39,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 69 proven. 60 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-05 19:26:40,098 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:40,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73840744] [2024-11-05 19:26:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [73840744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:26:40,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:26:40,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-05 19:26:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053768100] [2024-11-05 19:26:40,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:26:40,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-05 19:26:40,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:40,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-05 19:26:40,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-05 19:26:40,105 INFO L87 Difference]: Start difference. First operand 109 states and 172 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-05 19:26:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:41,212 INFO L93 Difference]: Finished difference Result 223 states and 348 transitions. [2024-11-05 19:26:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 19:26:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 270 [2024-11-05 19:26:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:41,227 INFO L225 Difference]: With dead ends: 223 [2024-11-05 19:26:41,227 INFO L226 Difference]: Without dead ends: 117 [2024-11-05 19:26:41,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-05 19:26:41,230 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 145 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:41,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 267 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-05 19:26:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-05 19:26:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-05 19:26:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-05 19:26:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 173 transitions. [2024-11-05 19:26:41,246 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 173 transitions. Word has length 270 [2024-11-05 19:26:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:41,247 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 173 transitions. [2024-11-05 19:26:41,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-05 19:26:41,247 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 173 transitions. [2024-11-05 19:26:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-05 19:26:41,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:41,249 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:41,261 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 (3)] Ended with exit code 0 [2024-11-05 19:26:41,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:41,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:41,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash -652403534, now seen corresponding path program 1 times [2024-11-05 19:26:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:41,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492920072] [2024-11-05 19:26:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:41,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:41,453 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 19:26:41,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-05 19:26:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:41,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-05 19:26:41,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-05 19:26:42,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-11-05 19:26:42,576 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:42,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492920072] [2024-11-05 19:26:42,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1492920072] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 19:26:42,576 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 19:26:42,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2024-11-05 19:26:42,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472825513] [2024-11-05 19:26:42,577 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 19:26:42,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-05 19:26:42,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:42,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-05 19:26:42,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 19:26:42,579 INFO L87 Difference]: Start difference. First operand 113 states and 173 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-05 19:26:42,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:42,949 INFO L93 Difference]: Finished difference Result 223 states and 343 transitions. [2024-11-05 19:26:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-05 19:26:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) Word has length 270 [2024-11-05 19:26:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:42,963 INFO L225 Difference]: With dead ends: 223 [2024-11-05 19:26:42,963 INFO L226 Difference]: Without dead ends: 113 [2024-11-05 19:26:42,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 536 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-05 19:26:42,965 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:42,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 166 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-05 19:26:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-05 19:26:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-05 19:26:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-05 19:26:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 172 transitions. [2024-11-05 19:26:42,982 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 172 transitions. Word has length 270 [2024-11-05 19:26:42,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:42,982 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 172 transitions. [2024-11-05 19:26:42,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (88), 2 states have call predecessors, (88), 2 states have return successors, (88), 2 states have call predecessors, (88), 2 states have call successors, (88) [2024-11-05 19:26:42,983 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 172 transitions. [2024-11-05 19:26:42,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-05 19:26:42,985 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:42,985 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:42,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-05 19:26:43,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:43,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:43,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:43,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1673471888, now seen corresponding path program 1 times [2024-11-05 19:26:43,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:43,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099321586] [2024-11-05 19:26:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:43,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 19:26:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-05 19:26:43,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:43,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 19:26:43,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 1929 proven. 60 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2024-11-05 19:26:43,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 69 proven. 60 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-05 19:26:43,946 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:43,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099321586] [2024-11-05 19:26:43,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1099321586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:26:43,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:26:43,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-05 19:26:43,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506332932] [2024-11-05 19:26:43,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:26:43,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 19:26:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 19:26:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-05 19:26:43,948 INFO L87 Difference]: Start difference. First operand 113 states and 172 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-05 19:26:45,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:45,553 INFO L93 Difference]: Finished difference Result 338 states and 512 transitions. [2024-11-05 19:26:45,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-05 19:26:45,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 270 [2024-11-05 19:26:45,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:45,556 INFO L225 Difference]: With dead ends: 338 [2024-11-05 19:26:45,556 INFO L226 Difference]: Without dead ends: 228 [2024-11-05 19:26:45,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 532 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2024-11-05 19:26:45,559 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 184 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:45,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 538 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-05 19:26:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-05 19:26:45,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 218. [2024-11-05 19:26:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 125 states have (on average 1.248) internal successors, (156), 125 states have internal predecessors, (156), 88 states have call successors, (88), 4 states have call predecessors, (88), 4 states have return successors, (88), 88 states have call predecessors, (88), 88 states have call successors, (88) [2024-11-05 19:26:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 332 transitions. [2024-11-05 19:26:45,581 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 332 transitions. Word has length 270 [2024-11-05 19:26:45,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:45,582 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 332 transitions. [2024-11-05 19:26:45,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 2 states have call successors, (64), 2 states have call predecessors, (64), 4 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2024-11-05 19:26:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 332 transitions. [2024-11-05 19:26:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-05 19:26:45,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:45,584 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:45,596 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 [2024-11-05 19:26:45,784 WARN L453 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 [2024-11-05 19:26:45,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:45,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:45,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2131519120, now seen corresponding path program 1 times [2024-11-05 19:26:45,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:45,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213839044] [2024-11-05 19:26:45,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:45,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:45,787 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) [2024-11-05 19:26:45,789 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 [2024-11-05 19:26:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:46,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 19:26:46,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2086 proven. 138 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2024-11-05 19:26:46,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:47,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 114 proven. 141 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-11-05 19:26:47,193 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:47,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213839044] [2024-11-05 19:26:47,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1213839044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:26:47,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:26:47,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2024-11-05 19:26:47,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746890719] [2024-11-05 19:26:47,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:26:47,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 19:26:47,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:47,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 19:26:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-05 19:26:47,198 INFO L87 Difference]: Start difference. First operand 218 states and 332 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2024-11-05 19:26:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:49,658 INFO L93 Difference]: Finished difference Result 980 states and 1443 transitions. [2024-11-05 19:26:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-05 19:26:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 270 [2024-11-05 19:26:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:49,665 INFO L225 Difference]: With dead ends: 980 [2024-11-05 19:26:49,666 INFO L226 Difference]: Without dead ends: 765 [2024-11-05 19:26:49,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 529 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=556, Invalid=1514, Unknown=0, NotChecked=0, Total=2070 [2024-11-05 19:26:49,670 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 371 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:49,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 581 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-05 19:26:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-05 19:26:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 705. [2024-11-05 19:26:49,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 398 states have (on average 1.1959798994974875) internal successors, (476), 399 states have internal predecessors, (476), 282 states have call successors, (282), 24 states have call predecessors, (282), 24 states have return successors, (282), 281 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-05 19:26:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1040 transitions. [2024-11-05 19:26:49,766 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1040 transitions. Word has length 270 [2024-11-05 19:26:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:49,768 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 1040 transitions. [2024-11-05 19:26:49,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 3 states have call successors, (69), 3 states have call predecessors, (69), 7 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2024-11-05 19:26:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1040 transitions. [2024-11-05 19:26:49,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-05 19:26:49,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:49,771 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:49,783 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 (6)] Ended with exit code 0 [2024-11-05 19:26:49,972 WARN L453 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 [2024-11-05 19:26:49,972 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:49,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:49,973 INFO L85 PathProgramCache]: Analyzing trace with hash 708038653, now seen corresponding path program 1 times [2024-11-05 19:26:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:49,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744133606] [2024-11-05 19:26:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:49,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:49,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:49,975 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) [2024-11-05 19:26:49,976 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 [2024-11-05 19:26:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:50,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-05 19:26:50,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:26:50,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2124 proven. 63 refuted. 0 times theorem prover too weak. 1597 trivial. 0 not checked. [2024-11-05 19:26:50,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:26:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 114 proven. 15 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2024-11-05 19:26:51,171 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:26:51,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744133606] [2024-11-05 19:26:51,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [744133606] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:26:51,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:26:51,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2024-11-05 19:26:51,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006358189] [2024-11-05 19:26:51,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:26:51,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-05 19:26:51,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:26:51,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-05 19:26:51,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-05 19:26:51,173 INFO L87 Difference]: Start difference. First operand 705 states and 1040 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2024-11-05 19:26:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 19:26:56,155 INFO L93 Difference]: Finished difference Result 1505 states and 2149 transitions. [2024-11-05 19:26:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-05 19:26:56,170 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) Word has length 271 [2024-11-05 19:26:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 19:26:56,176 INFO L225 Difference]: With dead ends: 1505 [2024-11-05 19:26:56,177 INFO L226 Difference]: Without dead ends: 831 [2024-11-05 19:26:56,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 551 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2024-11-05 19:26:56,180 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 285 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-05 19:26:56,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 554 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-05 19:26:56,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-05 19:26:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 777. [2024-11-05 19:26:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 452 states have (on average 1.170353982300885) internal successors, (529), 453 states have internal predecessors, (529), 282 states have call successors, (282), 42 states have call predecessors, (282), 42 states have return successors, (282), 281 states have call predecessors, (282), 282 states have call successors, (282) [2024-11-05 19:26:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1093 transitions. [2024-11-05 19:26:56,240 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1093 transitions. Word has length 271 [2024-11-05 19:26:56,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 19:26:56,242 INFO L471 AbstractCegarLoop]: Abstraction has 777 states and 1093 transitions. [2024-11-05 19:26:56,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (61), 3 states have call predecessors, (61), 6 states have return successors, (62), 4 states have call predecessors, (62), 4 states have call successors, (62) [2024-11-05 19:26:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1093 transitions. [2024-11-05 19:26:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2024-11-05 19:26:56,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 19:26:56,244 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 19:26:56,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-05 19:26:56,445 WARN L453 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 [2024-11-05 19:26:56,445 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 19:26:56,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 19:26:56,446 INFO L85 PathProgramCache]: Analyzing trace with hash 966204091, now seen corresponding path program 1 times [2024-11-05 19:26:56,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 19:26:56,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470886747] [2024-11-05 19:26:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 19:26:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 19:26:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 19:26:56,449 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 19:26:56,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-05 19:26:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 19:26:56,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 19:26:56,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 19:27:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 2158 proven. 255 refuted. 0 times theorem prover too weak. 1371 trivial. 0 not checked. [2024-11-05 19:27:03,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 19:27:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 114 proven. 141 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2024-11-05 19:27:25,367 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 19:27:25,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470886747] [2024-11-05 19:27:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1470886747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 19:27:25,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 19:27:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2024-11-05 19:27:25,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736469215] [2024-11-05 19:27:25,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 19:27:25,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-05 19:27:25,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 19:27:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-05 19:27:25,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-11-05 19:27:25,369 INFO L87 Difference]: Start difference. First operand 777 states and 1093 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 7 states have call successors, (88), 5 states have call predecessors, (88), 10 states have return successors, (88), 7 states have call predecessors, (88), 7 states have call successors, (88)