/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-41.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-24 04:01:59,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-24 04:01:59,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-24 04:01:59,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-24 04:01:59,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-24 04:01:59,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-24 04:01:59,324 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-24 04:01:59,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-24 04:01:59,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-24 04:01:59,328 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-24 04:01:59,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-24 04:01:59,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-24 04:01:59,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-24 04:01:59,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-24 04:01:59,330 INFO L153 SettingsManager]: * Use SBE=true [2023-12-24 04:01:59,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-24 04:01:59,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-24 04:01:59,331 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-24 04:01:59,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-24 04:01:59,331 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-24 04:01:59,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-24 04:01:59,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-24 04:01:59,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-24 04:01:59,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-24 04:01:59,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-24 04:01:59,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-24 04:01:59,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 04:01:59,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-24 04:01:59,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-24 04:01:59,335 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-24 04:01:59,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-24 04:01:59,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-24 04:01:59,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-24 04:01:59,544 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-24 04:01:59,548 INFO L274 PluginConnector]: CDTParser initialized [2023-12-24 04:01:59,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-41.i [2023-12-24 04:02:00,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-24 04:02:00,673 INFO L384 CDTParser]: Found 1 translation units. [2023-12-24 04:02:00,673 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-41.i [2023-12-24 04:02:00,681 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5c29eeb/91d9fb4644e74da2b4908133f127de74/FLAG2aaf1c82a [2023-12-24 04:02:00,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5c29eeb/91d9fb4644e74da2b4908133f127de74 [2023-12-24 04:02:00,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-24 04:02:00,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-24 04:02:00,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-24 04:02:00,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-24 04:02:00,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-24 04:02:00,698 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,699 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e44d464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00, skipping insertion in model container [2023-12-24 04:02:00,699 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,717 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-24 04:02:00,803 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-41.i[915,928] [2023-12-24 04:02:00,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 04:02:00,851 INFO L202 MainTranslator]: Completed pre-run [2023-12-24 04:02:00,859 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_loopvsstraightlinecode_50-while_file-41.i[915,928] [2023-12-24 04:02:00,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-24 04:02:00,891 INFO L206 MainTranslator]: Completed translation [2023-12-24 04:02:00,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00 WrapperNode [2023-12-24 04:02:00,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-24 04:02:00,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-24 04:02:00,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-24 04:02:00,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-24 04:02:00,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,936 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 114 [2023-12-24 04:02:00,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-24 04:02:00,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-24 04:02:00,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-24 04:02:00,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-24 04:02:00,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,977 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-24 04:02:00,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:00,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:01,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-24 04:02:01,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-24 04:02:01,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-24 04:02:01,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-24 04:02:01,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (1/1) ... [2023-12-24 04:02:01,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-24 04:02:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-24 04:02:01,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-24 04:02:01,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-24 04:02:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-24 04:02:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-24 04:02:01,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-24 04:02:01,059 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-24 04:02:01,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-24 04:02:01,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-24 04:02:01,137 INFO L241 CfgBuilder]: Building ICFG [2023-12-24 04:02:01,142 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-24 04:02:04,406 INFO L282 CfgBuilder]: Performing block encoding [2023-12-24 04:02:04,456 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-24 04:02:04,457 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-24 04:02:04,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:02:04 BoogieIcfgContainer [2023-12-24 04:02:04,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-24 04:02:04,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-24 04:02:04,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-24 04:02:04,461 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-24 04:02:04,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.12 04:02:00" (1/3) ... [2023-12-24 04:02:04,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3680c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:02:04, skipping insertion in model container [2023-12-24 04:02:04,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.12 04:02:00" (2/3) ... [2023-12-24 04:02:04,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b3680c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.12 04:02:04, skipping insertion in model container [2023-12-24 04:02:04,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.12 04:02:04" (3/3) ... [2023-12-24 04:02:04,462 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_50-while_file-41.i [2023-12-24 04:02:04,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-24 04:02:04,474 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-24 04:02:04,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-24 04:02:04,524 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d455a3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-24 04:02:04,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-24 04:02:04,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-24 04:02:04,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 04:02:04,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:02:04,534 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:02:04,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:02:04,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:02:04,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1800195938, now seen corresponding path program 1 times [2023-12-24 04:02:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:02:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582906648] [2023-12-24 04:02:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:02:04,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 04:02:04,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:02:04,557 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 04:02:04,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-24 04:02:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:02:04,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-24 04:02:04,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:02:04,862 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-24 04:02:04,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 04:02:04,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:02:04,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582906648] [2023-12-24 04:02:04,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582906648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 04:02:04,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 04:02:04,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-24 04:02:04,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779559071] [2023-12-24 04:02:04,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 04:02:04,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-24 04:02:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:02:04,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-24 04:02:04,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 04:02:04,889 INFO L87 Difference]: Start difference. First operand has 46 states, 30 states have (on average 1.5) internal successors, (45), 31 states have internal predecessors, (45), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-24 04:02:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:02:05,867 INFO L93 Difference]: Finished difference Result 89 states and 153 transitions. [2023-12-24 04:02:05,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-24 04:02:05,895 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2023-12-24 04:02:05,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:02:05,900 INFO L225 Difference]: With dead ends: 89 [2023-12-24 04:02:05,900 INFO L226 Difference]: Without dead ends: 44 [2023-12-24 04:02:05,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-24 04:02:05,904 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-24 04:02:05,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-24 04:02:05,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-24 04:02:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-24 04:02:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-24 04:02:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 65 transitions. [2023-12-24 04:02:05,931 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 65 transitions. Word has length 87 [2023-12-24 04:02:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:02:05,932 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 65 transitions. [2023-12-24 04:02:05,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-24 04:02:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 65 transitions. [2023-12-24 04:02:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-24 04:02:05,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:02:05,934 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:02:05,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-24 04:02:06,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 04:02:06,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:02:06,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:02:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1442768356, now seen corresponding path program 1 times [2023-12-24 04:02:06,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:02:06,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522803009] [2023-12-24 04:02:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:02:06,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 04:02:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:02:06,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 04:02:06,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-24 04:02:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:02:06,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-24 04:02:06,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-24 04:02:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-24 04:02:06,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-24 04:02:06,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-24 04:02:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522803009] [2023-12-24 04:02:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522803009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-24 04:02:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-24 04:02:06,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-24 04:02:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249883170] [2023-12-24 04:02:06,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-24 04:02:06,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-24 04:02:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-24 04:02:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-24 04:02:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-24 04:02:06,745 INFO L87 Difference]: Start difference. First operand 44 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-24 04:02:08,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-24 04:02:08,166 INFO L93 Difference]: Finished difference Result 97 states and 137 transitions. [2023-12-24 04:02:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-24 04:02:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 87 [2023-12-24 04:02:08,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-24 04:02:08,194 INFO L225 Difference]: With dead ends: 97 [2023-12-24 04:02:08,194 INFO L226 Difference]: Without dead ends: 54 [2023-12-24 04:02:08,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-24 04:02:08,195 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 68 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-24 04:02:08,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 133 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-24 04:02:08,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-24 04:02:08,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2023-12-24 04:02:08,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-24 04:02:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2023-12-24 04:02:08,204 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 87 [2023-12-24 04:02:08,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-24 04:02:08,204 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2023-12-24 04:02:08,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-24 04:02:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2023-12-24 04:02:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-24 04:02:08,206 INFO L187 NwaCegarLoop]: Found error trace [2023-12-24 04:02:08,206 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-24 04:02:08,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-24 04:02:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 04:02:08,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-24 04:02:08,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-24 04:02:08,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1776227805, now seen corresponding path program 1 times [2023-12-24 04:02:08,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-24 04:02:08,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318044296] [2023-12-24 04:02:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-24 04:02:08,416 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-24 04:02:08,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-24 04:02:08,418 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-24 04:02:08,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-24 04:02:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-24 04:02:08,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-24 04:02:08,809 INFO L285 TraceCheckSpWp]: Computing forward predicates...