/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-64bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.protocols.5.prop1-func-interl.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 22:20:35,490 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 22:20:35,533 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-12-16 22:20:35,536 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 22:20:35,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 22:20:35,551 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 22:20:35,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 22:20:35,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 22:20:35,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 22:20:35,556 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 22:20:35,556 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 22:20:35,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 22:20:35,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 22:20:35,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 22:20:35,558 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 22:20:35,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 22:20:35,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 22:20:35,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 22:20:35,558 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 22:20:35,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 22:20:35,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 22:20:35,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 22:20:35,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 22:20:35,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 22:20:35,561 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 22:20:35,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 22:20:35,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 22:20:35,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 22:20:35,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 22:20:35,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 22:20:35,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 22:20:35,564 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 22:20:35,564 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 22:20:35,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 22:20:35,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 22:20:35,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 22:20:35,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 22:20:35,791 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 22:20:35,791 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.protocols.5.prop1-func-interl.c [2023-12-16 22:20:36,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 22:20:37,179 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 22:20:37,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.protocols.5.prop1-func-interl.c [2023-12-16 22:20:37,196 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1249110/309124684f0a4f53b94a862b31b131cb/FLAG4923ad1d1 [2023-12-16 22:20:37,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c1249110/309124684f0a4f53b94a862b31b131cb [2023-12-16 22:20:37,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 22:20:37,212 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 22:20:37,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 22:20:37,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 22:20:37,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 22:20:37,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,219 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70bae43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37, skipping insertion in model container [2023-12-16 22:20:37,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 22:20:37,424 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.protocols.5.prop1-func-interl.c[1176,1189] [2023-12-16 22:20:37,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 22:20:37,636 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 22:20:37,650 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.protocols.5.prop1-func-interl.c[1176,1189] [2023-12-16 22:20:37,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 22:20:37,741 INFO L206 MainTranslator]: Completed translation [2023-12-16 22:20:37,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37 WrapperNode [2023-12-16 22:20:37,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 22:20:37,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 22:20:37,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 22:20:37,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 22:20:37,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,839 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1376 [2023-12-16 22:20:37,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 22:20:37,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 22:20:37,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 22:20:37,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 22:20:37,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,864 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,905 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 22:20:37,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,943 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 22:20:37,994 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 22:20:37,994 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 22:20:37,994 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 22:20:37,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (1/1) ... [2023-12-16 22:20:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 22:20:38,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 22:20:38,033 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) [2023-12-16 22:20:38,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 22:20:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 22:20:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 22:20:38,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 22:20:38,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 22:20:38,321 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 22:20:38,322 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 22:20:39,580 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 22:20:39,628 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 22:20:39,629 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 22:20:39,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:20:39 BoogieIcfgContainer [2023-12-16 22:20:39,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 22:20:39,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 22:20:39,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 22:20:39,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 22:20:39,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 10:20:37" (1/3) ... [2023-12-16 22:20:39,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113804bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:20:39, skipping insertion in model container [2023-12-16 22:20:39,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 10:20:37" (2/3) ... [2023-12-16 22:20:39,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@113804bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 10:20:39, skipping insertion in model container [2023-12-16 22:20:39,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 10:20:39" (3/3) ... [2023-12-16 22:20:39,636 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.protocols.5.prop1-func-interl.c [2023-12-16 22:20:39,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 22:20:39,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 22:20:39,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 22:20:39,695 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;@4d98a899, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 22:20:39,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 22:20:39,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-16 22:20:39,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:20:39,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-16 22:20:39,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:20:39,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:20:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-16 22:20:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:20:39,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221193218] [2023-12-16 22:20:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:20:39,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:20:39,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:20:39,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 22:20:39,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 22:20:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:20:40,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-16 22:20:40,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:20:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:20:40,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 22:20:40,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:20:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221193218] [2023-12-16 22:20:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221193218] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 22:20:40,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 22:20:40,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 22:20:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930298902] [2023-12-16 22:20:40,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 22:20:40,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 22:20:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:20:40,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 22:20:40,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 22:20:40,196 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:20:40,471 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-16 22:20:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 22:20:40,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-16 22:20:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:20:40,480 INFO L225 Difference]: With dead ends: 16 [2023-12-16 22:20:40,480 INFO L226 Difference]: Without dead ends: 9 [2023-12-16 22:20:40,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 22:20:40,485 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 22:20:40,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 22:20:40,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-16 22:20:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-16 22:20:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-16 22:20:40,513 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-16 22:20:40,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:20:40,513 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-16 22:20:40,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:40,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-16 22:20:40,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 22:20:40,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:20:40,514 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-16 22:20:40,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 22:20:40,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:20:40,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:20:40,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:20:40,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-16 22:20:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:20:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386544661] [2023-12-16 22:20:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 22:20:40,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:20:40,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:20:40,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 22:20:40,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 22:20:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 22:20:42,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 99 conjunts are in the unsatisfiable core [2023-12-16 22:20:42,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:20:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:20:43,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:20:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:20:53,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:20:53,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386544661] [2023-12-16 22:20:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386544661] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 22:20:53,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:20:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-16 22:20:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758585561] [2023-12-16 22:20:53,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:20:53,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 22:20:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:20:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 22:20:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 22:20:53,130 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:20:54,377 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-16 22:20:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 22:20:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-16 22:20:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:20:54,378 INFO L225 Difference]: With dead ends: 14 [2023-12-16 22:20:54,378 INFO L226 Difference]: Without dead ends: 12 [2023-12-16 22:20:54,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 22:20:54,381 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 22:20:54,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 22:20:54,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-16 22:20:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-16 22:20:54,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-16 22:20:54,387 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-16 22:20:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:20:54,387 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-16 22:20:54,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:20:54,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-16 22:20:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 22:20:54,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:20:54,388 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-16 22:20:54,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 22:20:54,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:20:54,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:20:54,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:20:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-16 22:20:54,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:20:54,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150041786] [2023-12-16 22:20:54,595 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 22:20:54,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:20:54,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:20:54,608 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 22:20:54,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 22:20:57,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 22:20:57,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:20:57,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 145 conjunts are in the unsatisfiable core [2023-12-16 22:20:57,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:20:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:20:58,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 22:21:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:21:24,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 22:21:24,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150041786] [2023-12-16 22:21:24,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150041786] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 22:21:24,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 22:21:24,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-16 22:21:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976489476] [2023-12-16 22:21:24,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 22:21:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 22:21:24,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 22:21:24,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 22:21:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=137, Unknown=4, NotChecked=0, Total=182 [2023-12-16 22:21:24,454 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:21:28,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-16 22:21:30,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 22:21:30,640 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-12-16 22:21:30,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 22:21:30,644 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 22:21:30,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 22:21:30,645 INFO L225 Difference]: With dead ends: 17 [2023-12-16 22:21:30,645 INFO L226 Difference]: Without dead ends: 15 [2023-12-16 22:21:30,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=88, Invalid=214, Unknown=4, NotChecked=0, Total=306 [2023-12-16 22:21:30,649 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-16 22:21:30,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-12-16 22:21:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-16 22:21:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-12-16 22:21:30,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:21:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-12-16 22:21:30,670 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-12-16 22:21:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 22:21:30,671 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-12-16 22:21:30,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 22:21:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-12-16 22:21:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 22:21:30,671 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 22:21:30,671 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-12-16 22:21:30,693 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 (4)] Forceful destruction successful, exit code 0 [2023-12-16 22:21:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:21:30,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 22:21:30,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 22:21:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-12-16 22:21:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 22:21:30,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180803294] [2023-12-16 22:21:30,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 22:21:30,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:21:30,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 22:21:30,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 22:21:30,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 22:21:35,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-16 22:21:35,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 22:21:35,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 190 conjunts are in the unsatisfiable core [2023-12-16 22:21:35,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 22:21:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 22:21:37,133 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-16 22:21:50,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 22:21:50,204 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 22:21:50,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 22:21:50,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-12-16 22:21:50,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 22:21:50,803 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 14 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 14 known predicates. [2023-12-16 22:21:50,806 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-12-16 22:21:50,825 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 22:21:50,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 10:21:50 BoogieIcfgContainer [2023-12-16 22:21:50,829 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 22:21:50,830 INFO L158 Benchmark]: Toolchain (without parser) took 73617.80ms. Allocated memory was 305.1MB in the beginning and 640.7MB in the end (delta: 335.5MB). Free memory was 253.2MB in the beginning and 438.4MB in the end (delta: -185.2MB). Peak memory consumption was 379.2MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,830 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 22:21:50,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.64ms. Allocated memory is still 305.1MB. Free memory was 253.2MB in the beginning and 207.1MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.57ms. Allocated memory is still 305.1MB. Free memory was 206.8MB in the beginning and 265.0MB in the end (delta: -58.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,830 INFO L158 Benchmark]: Boogie Preprocessor took 153.51ms. Allocated memory is still 305.1MB. Free memory was 265.0MB in the beginning and 251.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,830 INFO L158 Benchmark]: RCFGBuilder took 1634.76ms. Allocated memory is still 305.1MB. Free memory was 251.9MB in the beginning and 133.3MB in the end (delta: 118.6MB). Peak memory consumption was 137.5MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,831 INFO L158 Benchmark]: TraceAbstraction took 71198.46ms. Allocated memory was 305.1MB in the beginning and 640.7MB in the end (delta: 335.5MB). Free memory was 132.7MB in the beginning and 438.4MB in the end (delta: -305.6MB). Peak memory consumption was 257.4MB. Max. memory is 8.0GB. [2023-12-16 22:21:50,832 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 174.1MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 527.64ms. Allocated memory is still 305.1MB. Free memory was 253.2MB in the beginning and 207.1MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 97.57ms. Allocated memory is still 305.1MB. Free memory was 206.8MB in the beginning and 265.0MB in the end (delta: -58.1MB). Peak memory consumption was 11.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 153.51ms. Allocated memory is still 305.1MB. Free memory was 265.0MB in the beginning and 251.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * RCFGBuilder took 1634.76ms. Allocated memory is still 305.1MB. Free memory was 251.9MB in the beginning and 133.3MB in the end (delta: 118.6MB). Peak memory consumption was 137.5MB. Max. memory is 8.0GB. * TraceAbstraction took 71198.46ms. Allocated memory was 305.1MB in the beginning and 640.7MB in the end (delta: 335.5MB). Free memory was 132.7MB in the beginning and 438.4MB in the end (delta: -305.6MB). Peak memory consumption was 257.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 14 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 71.1s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 30 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 6 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 25.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 38.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 14 QuantifiedInterpolants, 18057 SizeOfPredicates, 299 NumberOfNonLiveVariables, 3333 ConjunctsInSsa, 259 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown