/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_amount10_file-76.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 08:08:32,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 08:08:32,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 08:08:32,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 08:08:32,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 08:08:32,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 08:08:32,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 08:08:32,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 08:08:32,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 08:08:32,569 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 08:08:32,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 08:08:32,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 08:08:32,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 08:08:32,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 08:08:32,571 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 08:08:32,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 08:08:32,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 08:08:32,571 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 08:08:32,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 08:08:32,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 08:08:32,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 08:08:32,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 08:08:32,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 08:08:32,573 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 08:08:32,573 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 08:08:32,574 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 08:08:32,574 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 08:08:32,574 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 08:08:32,574 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 08:08:32,574 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 08:08:32,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 08:08:32,575 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 08:08:32,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 08:08:32,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 08:08:32,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:08:32,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 08:08:32,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 08:08:32,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 08:08:32,576 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 08:08:32,576 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 08:08:32,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 08:08:32,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 08:08:32,577 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 08:08:32,577 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 08:08:32,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-03 08:08:32,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 08:08:32,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 08:08:32,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 08:08:32,744 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 08:08:32,744 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 08:08:32,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2024-11-03 08:08:33,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 08:08:34,234 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 08:08:34,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount10_file-76.i [2024-11-03 08:08:34,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7045f2448/cd4b84a5ca2b42ba8a0ac1359e7dda18/FLAGc5096a397 [2024-11-03 08:08:34,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7045f2448/cd4b84a5ca2b42ba8a0ac1359e7dda18 [2024-11-03 08:08:34,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 08:08:34,603 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 08:08:34,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 08:08:34,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 08:08:34,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 08:08:34,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f7c0ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34, skipping insertion in model container [2024-11-03 08:08:34,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 08:08:34,760 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_amount10_file-76.i[915,928] [2024-11-03 08:08:34,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:08:34,789 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 08:08:34,798 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_amount10_file-76.i[915,928] [2024-11-03 08:08:34,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 08:08:34,819 INFO L204 MainTranslator]: Completed translation [2024-11-03 08:08:34,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34 WrapperNode [2024-11-03 08:08:34,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 08:08:34,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 08:08:34,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 08:08:34,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 08:08:34,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,847 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 73 [2024-11-03 08:08:34,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 08:08:34,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 08:08:34,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 08:08:34,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 08:08:34,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,890 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]. [2024-11-03 08:08:34,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,901 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,908 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,909 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 08:08:34,921 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 08:08:34,921 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 08:08:34,921 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 08:08:34,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (1/1) ... [2024-11-03 08:08:34,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 08:08:34,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 08:08:34,947 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) [2024-11-03 08:08:34,951 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 [2024-11-03 08:08:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 08:08:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 08:08:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 08:08:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 08:08:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 08:08:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 08:08:35,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 08:08:35,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 08:08:35,775 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-03 08:08:35,775 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 08:08:35,784 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 08:08:35,784 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 08:08:35,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:08:35 BoogieIcfgContainer [2024-11-03 08:08:35,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 08:08:35,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 08:08:35,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 08:08:35,792 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 08:08:35,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 08:08:34" (1/3) ... [2024-11-03 08:08:35,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b94c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:08:35, skipping insertion in model container [2024-11-03 08:08:35,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 08:08:34" (2/3) ... [2024-11-03 08:08:35,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b94c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 08:08:35, skipping insertion in model container [2024-11-03 08:08:35,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 08:08:35" (3/3) ... [2024-11-03 08:08:35,794 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-76.i [2024-11-03 08:08:35,807 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 08:08:35,807 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 08:08:35,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 08:08:35,872 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;@5c4d7ce5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 08:08:35,873 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 08:08:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 08:08:35,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 08:08:35,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:08:35,884 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:08:35,884 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:08:35,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:08:35,889 INFO L85 PathProgramCache]: Analyzing trace with hash -621472132, now seen corresponding path program 1 times [2024-11-03 08:08:35,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:08:35,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448249616] [2024-11-03 08:08:35,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:08:35,898 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 [2024-11-03 08:08:35,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:08:35,902 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) [2024-11-03 08:08:35,903 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 [2024-11-03 08:08:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:08:36,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 08:08:36,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:08:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 08:08:36,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:08:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-03 08:08:36,158 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:08:36,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448249616] [2024-11-03 08:08:36,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [448249616] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 08:08:36,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 08:08:36,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-03 08:08:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353563827] [2024-11-03 08:08:36,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 08:08:36,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 08:08:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:08:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 08:08:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 08:08:36,204 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 08:08:36,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:08:36,241 INFO L93 Difference]: Finished difference Result 61 states and 91 transitions. [2024-11-03 08:08:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 08:08:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 52 [2024-11-03 08:08:36,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:08:36,252 INFO L225 Difference]: With dead ends: 61 [2024-11-03 08:08:36,252 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 08:08:36,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 08:08:36,260 INFO L432 NwaCegarLoop]: 38 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, 38 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 [2024-11-03 08:08:36,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 08:08:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 08:08:36,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 08:08:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 08:08:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-11-03 08:08:36,293 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 52 [2024-11-03 08:08:36,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:08:36,293 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-03 08:08:36,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-03 08:08:36,294 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-11-03 08:08:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 08:08:36,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:08:36,298 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:08:36,305 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 [2024-11-03 08:08:36,502 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 [2024-11-03 08:08:36,504 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:08:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:08:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 176339458, now seen corresponding path program 1 times [2024-11-03 08:08:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:08:36,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171205492] [2024-11-03 08:08:36,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:08:36,506 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 [2024-11-03 08:08:36,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:08:36,513 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) [2024-11-03 08:08:36,544 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 [2024-11-03 08:08:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:08:36,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 08:08:36,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:08:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 08:08:36,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:08:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 08:08:36,914 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:08:36,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171205492] [2024-11-03 08:08:36,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [171205492] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 08:08:36,915 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 08:08:36,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 08:08:36,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297477517] [2024-11-03 08:08:36,915 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 08:08:36,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 08:08:36,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:08:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 08:08:36,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 08:08:36,919 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-03 08:08:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 08:08:37,101 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2024-11-03 08:08:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 08:08:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 52 [2024-11-03 08:08:37,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 08:08:37,109 INFO L225 Difference]: With dead ends: 57 [2024-11-03 08:08:37,110 INFO L226 Difference]: Without dead ends: 30 [2024-11-03 08:08:37,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 08:08:37,111 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 08:08:37,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 34 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 08:08:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-03 08:08:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-03 08:08:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-03 08:08:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-03 08:08:37,118 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 52 [2024-11-03 08:08:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 08:08:37,119 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-03 08:08:37,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-03 08:08:37,119 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-03 08:08:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-03 08:08:37,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 08:08:37,120 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 08:08:37,129 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 [2024-11-03 08:08:37,321 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 [2024-11-03 08:08:37,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 08:08:37,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 08:08:37,322 INFO L85 PathProgramCache]: Analyzing trace with hash 233597760, now seen corresponding path program 1 times [2024-11-03 08:08:37,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 08:08:37,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1779388912] [2024-11-03 08:08:37,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 08:08:37,323 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 [2024-11-03 08:08:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-03 08:08:37,325 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) [2024-11-03 08:08:37,326 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 [2024-11-03 08:08:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 08:08:37,406 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-03 08:08:37,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 08:08:52,477 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 08:09:17,000 WARN L286 SmtUtils]: Spent 8.34s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 08:09:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 08:09:33,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 08:09:53,383 WARN L286 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 08:10:16,014 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 08:10:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-03 08:10:22,470 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 08:10:22,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1779388912] [2024-11-03 08:10:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1779388912] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 08:10:22,470 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 08:10:22,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 13 [2024-11-03 08:10:22,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580189061] [2024-11-03 08:10:22,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 08:10:22,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 08:10:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 08:10:22,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 08:10:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-03 08:10:22,472 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14)