/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/eca-rers2012/Problem16_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 09:38:04,379 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 09:38:04,447 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 09:38:04,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 09:38:04,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 09:38:04,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 09:38:04,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 09:38:04,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 09:38:04,478 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 09:38:04,481 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 09:38:04,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 09:38:04,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 09:38:04,482 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 09:38:04,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 09:38:04,484 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 09:38:04,484 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 09:38:04,484 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 09:38:04,485 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 09:38:04,485 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 09:38:04,485 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 09:38:04,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 09:38:04,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 09:38:04,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 09:38:04,486 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 09:38:04,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 09:38:04,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 09:38:04,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:38:04,489 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 09:38:04,489 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 09:38:04,490 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 09:38:04,490 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 09:38:04,490 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 09:38:04,490 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 09:38:04,490 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 09:38:04,491 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 09:38:04,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 09:38:04,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 09:38:04,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 09:38:04,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 09:38:04,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 09:38:04,712 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 09:38:04,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2023-12-16 09:38:05,934 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 09:38:06,250 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 09:38:06,251 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c [2023-12-16 09:38:06,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e185523/b0a1ad7ce17e4d67a508961db2602ea7/FLAGcb536999a [2023-12-16 09:38:06,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3e185523/b0a1ad7ce17e4d67a508961db2602ea7 [2023-12-16 09:38:06,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 09:38:06,284 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 09:38:06,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 09:38:06,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 09:38:06,289 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 09:38:06,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:38:06" (1/1) ... [2023-12-16 09:38:06,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b88eb01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:06, skipping insertion in model container [2023-12-16 09:38:06,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:38:06" (1/1) ... [2023-12-16 09:38:06,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 09:38:06,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c[5621,5634] [2023-12-16 09:38:06,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:38:06,843 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 09:38:06,865 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45.c[5621,5634] [2023-12-16 09:38:07,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 09:38:07,012 INFO L206 MainTranslator]: Completed translation [2023-12-16 09:38:07,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07 WrapperNode [2023-12-16 09:38:07,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 09:38:07,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 09:38:07,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 09:38:07,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 09:38:07,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,110 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1767 [2023-12-16 09:38:07,110 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 09:38:07,111 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 09:38:07,111 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 09:38:07,111 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 09:38:07,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,166 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 09:38:07,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,242 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 09:38:07,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 09:38:07,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 09:38:07,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 09:38:07,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (1/1) ... [2023-12-16 09:38:07,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 09:38:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 09:38:07,280 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 09:38:07,307 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 09:38:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 09:38:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 09:38:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 09:38:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 09:38:07,373 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 09:38:07,375 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 09:38:14,398 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 09:38:14,449 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 09:38:14,449 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 09:38:14,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:38:14 BoogieIcfgContainer [2023-12-16 09:38:14,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 09:38:14,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 09:38:14,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 09:38:14,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 09:38:14,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:38:06" (1/3) ... [2023-12-16 09:38:14,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4400f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:38:14, skipping insertion in model container [2023-12-16 09:38:14,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:38:07" (2/3) ... [2023-12-16 09:38:14,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4400f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:38:14, skipping insertion in model container [2023-12-16 09:38:14,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:38:14" (3/3) ... [2023-12-16 09:38:14,456 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45.c [2023-12-16 09:38:14,469 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 09:38:14,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 09:38:14,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 09:38:14,530 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;@4213178e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 09:38:14,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 09:38:14,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 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 09:38:14,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 09:38:14,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:14,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:14,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:14,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:14,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1280838999, now seen corresponding path program 1 times [2023-12-16 09:38:14,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:14,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284642084] [2023-12-16 09:38:14,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:14,557 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 09:38:14,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:14,559 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 09:38:14,580 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 09:38:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:14,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 09:38:14,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:14,640 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 09:38:14,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:38:14,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:14,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284642084] [2023-12-16 09:38:14,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284642084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:38:14,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:38:14,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:38:14,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419265370] [2023-12-16 09:38:14,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:38:14,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 09:38:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:14,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 09:38:14,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:38:14,666 INFO L87 Difference]: Start difference. First operand has 334 states, 332 states have (on average 1.9909638554216869) internal successors, (661), 333 states have internal predecessors, (661), 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 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 09:38:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:38:14,703 INFO L93 Difference]: Finished difference Result 667 states and 1321 transitions. [2023-12-16 09:38:14,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 09:38:14,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2023-12-16 09:38:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:38:14,713 INFO L225 Difference]: With dead ends: 667 [2023-12-16 09:38:14,713 INFO L226 Difference]: Without dead ends: 332 [2023-12-16 09:38:14,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 09:38:14,718 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 09:38:14,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 09:38:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2023-12-16 09:38:14,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2023-12-16 09:38:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.8006042296072509) internal successors, (596), 331 states have internal predecessors, (596), 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 09:38:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 596 transitions. [2023-12-16 09:38:14,758 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 596 transitions. Word has length 52 [2023-12-16 09:38:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:38:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 596 transitions. [2023-12-16 09:38:14,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 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 09:38:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 596 transitions. [2023-12-16 09:38:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 09:38:14,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:14,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:14,764 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 09:38:14,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:38:14,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:14,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash -485641787, now seen corresponding path program 1 times [2023-12-16 09:38:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:14,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66066179] [2023-12-16 09:38:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:38:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:14,963 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:38:14,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 09:38:15,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:15,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:38:15,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:15,120 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 09:38:15,120 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:38:15,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:15,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66066179] [2023-12-16 09:38:15,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66066179] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:38:15,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:38:15,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:38:15,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645793679] [2023-12-16 09:38:15,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:38:15,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:38:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:38:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:15,124 INFO L87 Difference]: Start difference. First operand 332 states and 596 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 09:38:26,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:38:26,317 INFO L93 Difference]: Finished difference Result 992 states and 1785 transitions. [2023-12-16 09:38:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:38:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 52 [2023-12-16 09:38:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:38:26,320 INFO L225 Difference]: With dead ends: 992 [2023-12-16 09:38:26,321 INFO L226 Difference]: Without dead ends: 661 [2023-12-16 09:38:26,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:26,323 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 288 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-12-16 09:38:26,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 223 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2023-12-16 09:38:26,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2023-12-16 09:38:26,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 661. [2023-12-16 09:38:26,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 1.4833333333333334) internal successors, (979), 660 states have internal predecessors, (979), 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 09:38:26,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 979 transitions. [2023-12-16 09:38:26,347 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 979 transitions. Word has length 52 [2023-12-16 09:38:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:38:26,347 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 979 transitions. [2023-12-16 09:38:26,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 2 states have internal predecessors, (52), 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 09:38:26,348 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 979 transitions. [2023-12-16 09:38:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-12-16 09:38:26,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:26,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:26,361 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 09:38:26,561 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 09:38:26,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:26,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash -546298124, now seen corresponding path program 1 times [2023-12-16 09:38:26,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:26,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055824525] [2023-12-16 09:38:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:26,563 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 09:38:26,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:26,565 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 09:38:26,569 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 09:38:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:26,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:38:26,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:38:26,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:38:26,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:26,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055824525] [2023-12-16 09:38:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055824525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:38:26,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:38:26,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:38:26,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281312246] [2023-12-16 09:38:26,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:38:26,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:38:26,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:26,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:38:26,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:26,770 INFO L87 Difference]: Start difference. First operand 661 states and 979 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 09:38:33,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:38:33,560 INFO L93 Difference]: Finished difference Result 1650 states and 2340 transitions. [2023-12-16 09:38:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:38:33,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 124 [2023-12-16 09:38:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:38:33,563 INFO L225 Difference]: With dead ends: 1650 [2023-12-16 09:38:33,564 INFO L226 Difference]: Without dead ends: 990 [2023-12-16 09:38:33,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:33,566 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 260 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-12-16 09:38:33,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 247 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-16 09:38:33,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-12-16 09:38:33,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 990. [2023-12-16 09:38:33,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 989 states have (on average 1.352881698685541) internal successors, (1338), 989 states have internal predecessors, (1338), 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 09:38:33,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1338 transitions. [2023-12-16 09:38:33,583 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1338 transitions. Word has length 124 [2023-12-16 09:38:33,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:38:33,583 INFO L495 AbstractCegarLoop]: Abstraction has 990 states and 1338 transitions. [2023-12-16 09:38:33,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 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 09:38:33,583 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1338 transitions. [2023-12-16 09:38:33,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 09:38:33,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:33,602 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:33,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 09:38:33,806 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 09:38:33,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:33,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:33,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1731686559, now seen corresponding path program 1 times [2023-12-16 09:38:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:33,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272771016] [2023-12-16 09:38:33,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:33,808 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 09:38:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:33,809 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 09:38:33,812 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 09:38:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:33,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 09:38:33,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:38:33,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:38:33,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:33,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272771016] [2023-12-16 09:38:33,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272771016] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:38:33,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:38:33,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 09:38:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081313897] [2023-12-16 09:38:33,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:38:33,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:38:33,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:38:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:33,962 INFO L87 Difference]: Start difference. First operand 990 states and 1338 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 09:38:42,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:38:42,720 INFO L93 Difference]: Finished difference Result 1979 states and 2910 transitions. [2023-12-16 09:38:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:38:42,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2023-12-16 09:38:42,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:38:42,724 INFO L225 Difference]: With dead ends: 1979 [2023-12-16 09:38:42,725 INFO L226 Difference]: Without dead ends: 1319 [2023-12-16 09:38:42,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:42,726 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 331 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-12-16 09:38:42,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 536 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-12-16 09:38:42,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-12-16 09:38:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1319. [2023-12-16 09:38:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1318 states have (on average 1.3148710166919575) internal successors, (1733), 1318 states have internal predecessors, (1733), 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 09:38:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1733 transitions. [2023-12-16 09:38:42,744 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1733 transitions. Word has length 139 [2023-12-16 09:38:42,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:38:42,744 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1733 transitions. [2023-12-16 09:38:42,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 09:38:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1733 transitions. [2023-12-16 09:38:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-16 09:38:42,747 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:42,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:42,752 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 09:38:42,949 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 09:38:42,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:42,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1296571486, now seen corresponding path program 1 times [2023-12-16 09:38:42,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:42,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101314946] [2023-12-16 09:38:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:42,952 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 09:38:42,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:42,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:38:42,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 09:38:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:43,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 09:38:43,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:43,599 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:38:43,599 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 09:38:43,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:43,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101314946] [2023-12-16 09:38:43,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101314946] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 09:38:43,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 09:38:43,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 09:38:43,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251809502] [2023-12-16 09:38:43,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 09:38:43,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 09:38:43,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:43,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 09:38:43,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:43,601 INFO L87 Difference]: Start difference. First operand 1319 states and 1733 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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 09:38:50,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 09:38:50,531 INFO L93 Difference]: Finished difference Result 2637 states and 3465 transitions. [2023-12-16 09:38:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 09:38:50,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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 177 [2023-12-16 09:38:50,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 09:38:50,537 INFO L225 Difference]: With dead ends: 2637 [2023-12-16 09:38:50,537 INFO L226 Difference]: Without dead ends: 1648 [2023-12-16 09:38:50,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 09:38:50,540 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 206 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:38:50,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 270 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-16 09:38:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-12-16 09:38:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2023-12-16 09:38:50,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1647 states have (on average 1.2556162720097146) internal successors, (2068), 1647 states have internal predecessors, (2068), 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 09:38:50,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2068 transitions. [2023-12-16 09:38:50,566 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2068 transitions. Word has length 177 [2023-12-16 09:38:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 09:38:50,567 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2068 transitions. [2023-12-16 09:38:50,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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 09:38:50,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2068 transitions. [2023-12-16 09:38:50,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-12-16 09:38:50,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 09:38:50,586 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 09:38:50,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 09:38:50,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:38:50,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 09:38:50,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 09:38:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -299937275, now seen corresponding path program 1 times [2023-12-16 09:38:50,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 09:38:50,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014234763] [2023-12-16 09:38:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 09:38:50,791 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 09:38:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 09:38:50,792 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 09:38:50,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 09:38:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 09:38:50,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 09:38:50,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 09:38:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:38:51,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 09:38:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 09:38:58,316 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 09:38:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014234763] [2023-12-16 09:38:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014234763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 09:38:58,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 09:38:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-12-16 09:38:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012693576] [2023-12-16 09:38:58,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 09:38:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 09:38:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 09:38:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 09:38:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 09:38:58,318 INFO L87 Difference]: Start difference. First operand 1648 states and 2068 transitions. Second operand has 7 states, 7 states have (on average 53.857142857142854) internal successors, (377), 6 states have internal predecessors, (377), 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) Received shutdown request... [2023-12-16 09:39:16,740 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 09:39:16,740 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 (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 09:39:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 09:39:16,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-12-16 09:39:16,794 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2543 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-12-16 09:39:16,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2543 Valid, 48 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 17.9s Time] [2023-12-16 09:39:16,795 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 09:39:16,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-16 09:39:16,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 09:39:16,999 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1648states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (2620 states constructed, input type IntersectNwa). [2023-12-16 09:39:17,002 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 09:39:17,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 09:39:17,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:39:17 BoogieIcfgContainer [2023-12-16 09:39:17,005 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 09:39:17,005 INFO L158 Benchmark]: Toolchain (without parser) took 70721.85ms. Allocated memory was 239.1MB in the beginning and 314.6MB in the end (delta: 75.5MB). Free memory was 189.3MB in the beginning and 259.6MB in the end (delta: -70.3MB). Peak memory consumption was 182.8MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,006 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 187.7MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 09:39:17,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 727.08ms. Allocated memory is still 239.1MB. Free memory was 189.3MB in the beginning and 191.6MB in the end (delta: -2.3MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.33ms. Allocated memory is still 239.1MB. Free memory was 191.6MB in the beginning and 179.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,006 INFO L158 Benchmark]: Boogie Preprocessor took 146.68ms. Allocated memory is still 239.1MB. Free memory was 179.0MB in the beginning and 165.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,006 INFO L158 Benchmark]: RCFGBuilder took 7191.76ms. Allocated memory is still 239.1MB. Free memory was 165.9MB in the beginning and 126.4MB in the end (delta: 39.5MB). Peak memory consumption was 91.4MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,007 INFO L158 Benchmark]: TraceAbstraction took 62553.27ms. Allocated memory was 239.1MB in the beginning and 314.6MB in the end (delta: 75.5MB). Free memory was 125.4MB in the beginning and 259.6MB in the end (delta: -134.2MB). Peak memory consumption was 118.5MB. Max. memory is 8.0GB. [2023-12-16 09:39:17,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 187.7MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 727.08ms. Allocated memory is still 239.1MB. Free memory was 189.3MB in the beginning and 191.6MB in the end (delta: -2.3MB). Peak memory consumption was 66.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 96.33ms. Allocated memory is still 239.1MB. Free memory was 191.6MB in the beginning and 179.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 146.68ms. Allocated memory is still 239.1MB. Free memory was 179.0MB in the beginning and 165.9MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * RCFGBuilder took 7191.76ms. Allocated memory is still 239.1MB. Free memory was 165.9MB in the beginning and 126.4MB in the end (delta: 39.5MB). Peak memory consumption was 91.4MB. Max. memory is 8.0GB. * TraceAbstraction took 62553.27ms. Allocated memory was 239.1MB in the beginning and 314.6MB in the end (delta: 75.5MB). Free memory was 125.4MB in the beginning and 259.6MB in the end (delta: -134.2MB). Peak memory consumption was 118.5MB. 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: 176]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 176). Cancelled while NwaCegarLoop was constructing difference of abstraction (1648states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (2620 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 334 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 62.5s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 52.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3628 SdHoareTripleChecker+Valid, 51.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3628 mSDsluCounter, 1920 SdHoareTripleChecker+Invalid, 42.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 842 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5920 IncrementalHoareTripleChecker+Invalid, 6762 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 842 mSolverCounterUnsat, 1866 mSDtfsCounter, 5920 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1009 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1648occurred in iteration=5, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1003 ConstructedInterpolants, 0 QuantifiedInterpolants, 6079 SizeOfPredicates, 4 NumberOfNonLiveVariables, 995 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 352/524 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