/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 10:21:59,233 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 10:21:59,311 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 10:21:59,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 10:21:59,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 10:21:59,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 10:21:59,343 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 10:21:59,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 10:21:59,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 10:21:59,344 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 10:21:59,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 10:21:59,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 10:21:59,346 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 10:21:59,349 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 10:21:59,349 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 10:21:59,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 10:21:59,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 10:21:59,350 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 10:21:59,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 10:21:59,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 10:21:59,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 10:21:59,353 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 10:21:59,353 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 10:21:59,353 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 10:21:59,353 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 10:21:59,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 10:21:59,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 10:21:59,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 10:21:59,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 10:21:59,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 10:21:59,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 10:21:59,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 10:21:59,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 10:21:59,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 10:21:59,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 10:21:59,356 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 10:21:59,356 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 10:21:59,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 10:21:59,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 10:21:59,357 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 10:21:59,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 10:21:59,358 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:21:59,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 10:21:59,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 10:21:59,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 10:21:59,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 10:21:59,612 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 10:21:59,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2024-11-05 10:22:00,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 10:22:01,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 10:22:01,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.usb_phy.c [2024-11-05 10:22:01,294 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6754545a/02998f9f63c34ec0aaaf65528c5a9674/FLAG6c1104990 [2024-11-05 10:22:01,311 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6754545a/02998f9f63c34ec0aaaf65528c5a9674 [2024-11-05 10:22:01,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 10:22:01,315 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 10:22:01,316 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 10:22:01,316 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 10:22:01,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 10:22:01,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:22:01" (1/1) ... [2024-11-05 10:22:01,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af5b10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:01, skipping insertion in model container [2024-11-05 10:22:01,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 10:22:01" (1/1) ... [2024-11-05 10:22:01,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 10:22:01,602 WARN L250 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.usb_phy.c[1247,1260] [2024-11-05 10:22:01,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 10:22:01,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 10:22:01,958 WARN L250 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.usb_phy.c[1247,1260] [2024-11-05 10:22:02,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 10:22:02,141 INFO L204 MainTranslator]: Completed translation [2024-11-05 10:22:02,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02 WrapperNode [2024-11-05 10:22:02,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 10:22:02,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 10:22:02,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 10:22:02,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 10:22:02,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,191 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,299 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517 [2024-11-05 10:22:02,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 10:22:02,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 10:22:02,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 10:22:02,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 10:22:02,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,395 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-05 10:22:02,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,396 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,445 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 10:22:02,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 10:22:02,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 10:22:02,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 10:22:02,512 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (1/1) ... [2024-11-05 10:22:02,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 10:22:02,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 10:22:02,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 10:22:02,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 10:22:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 10:22:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 10:22:02,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 10:22:02,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 10:22:03,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 10:22:03,029 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 10:22:04,355 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2024-11-05 10:22:04,356 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 10:22:04,368 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 10:22:04,368 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 10:22:04,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:22:04 BoogieIcfgContainer [2024-11-05 10:22:04,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 10:22:04,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 10:22:04,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 10:22:04,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 10:22:04,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 10:22:01" (1/3) ... [2024-11-05 10:22:04,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ed8e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:22:04, skipping insertion in model container [2024-11-05 10:22:04,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 10:22:02" (2/3) ... [2024-11-05 10:22:04,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ed8e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 10:22:04, skipping insertion in model container [2024-11-05 10:22:04,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 10:22:04" (3/3) ... [2024-11-05 10:22:04,378 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.usb_phy.c [2024-11-05 10:22:04,395 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 10:22:04,395 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 10:22:04,454 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 10:22:04,462 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1bf362c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 10:22:04,463 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 10:22:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2024-11-05 10:22:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-05 10:22:04,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:04,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-05 10:22:04,475 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:04,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-05 10:22:04,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:04,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503383796] [2024-11-05 10:22:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:04,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:04,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:04,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-05 10:22:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:04,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-05 10:22:04,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:05,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:05,304 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:05,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503383796] [2024-11-05 10:22:05,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1503383796] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 10:22:05,305 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 10:22:05,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-05 10:22:05,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180403800] [2024-11-05 10:22:05,307 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 10:22:05,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 10:22:05,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 10:22:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 10:22:05,336 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-11-05 10:22:05,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:05,458 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-05 10:22:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-05 10:22:05,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) Word has length 5 [2024-11-05 10:22:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:05,467 INFO L225 Difference]: With dead ends: 18 [2024-11-05 10:22:05,467 INFO L226 Difference]: Without dead ends: 10 [2024-11-05 10:22:05,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-05 10:22:05,475 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:05,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 10:22:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-05 10:22:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-05 10:22:05,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-11-05 10:22:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-05 10:22:05,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-05 10:22:05,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:05,503 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-05 10:22:05,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 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) [2024-11-05 10:22:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-05 10:22:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-05 10:22:05,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:05,504 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-05 10:22:05,511 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 [2024-11-05 10:22:05,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:05,706 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:05,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-05 10:22:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560082341] [2024-11-05 10:22:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:05,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:05,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:05,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-05 10:22:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:06,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-05 10:22:06,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:06,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:06,844 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:06,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560082341] [2024-11-05 10:22:06,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [560082341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 10:22:06,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 10:22:06,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-05 10:22:06,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996179513] [2024-11-05 10:22:06,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 10:22:06,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 10:22:06,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 10:22:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-05 10:22:06,848 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-11-05 10:22:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:07,055 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-11-05 10:22:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 10:22:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) Word has length 8 [2024-11-05 10:22:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:07,057 INFO L225 Difference]: With dead ends: 15 [2024-11-05 10:22:07,058 INFO L226 Difference]: Without dead ends: 13 [2024-11-05 10:22:07,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-05 10:22:07,059 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:07,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 10:22:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-05 10:22:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-05 10:22:07,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-11-05 10:22:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-05 10:22:07,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-05 10:22:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:07,066 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-05 10:22:07,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-11-05 10:22:07,067 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-05 10:22:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-05 10:22:07,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:07,067 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-05 10:22:07,076 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 [2024-11-05 10:22:07,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:07,269 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:07,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-05 10:22:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:07,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978211289] [2024-11-05 10:22:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:07,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:07,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:07,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:07,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-05 10:22:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:08,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-05 10:22:08,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:08,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:08,900 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978211289] [2024-11-05 10:22:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1978211289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 10:22:08,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 10:22:08,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-05 10:22:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507702489] [2024-11-05 10:22:08,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 10:22:08,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 10:22:08,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 10:22:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-05 10:22:08,903 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-11-05 10:22:09,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:09,211 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-11-05 10:22:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 10:22:09,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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 11 [2024-11-05 10:22:09,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:09,213 INFO L225 Difference]: With dead ends: 18 [2024-11-05 10:22:09,213 INFO L226 Difference]: Without dead ends: 16 [2024-11-05 10:22:09,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-05 10:22:09,215 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:09,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 26 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 10:22:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-05 10:22:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-05 10:22:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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) [2024-11-05 10:22:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-05 10:22:09,221 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-11-05 10:22:09,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:09,221 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-05 10:22:09,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 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) [2024-11-05 10:22:09,222 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-05 10:22:09,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-05 10:22:09,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:09,223 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-05 10:22:09,234 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 [2024-11-05 10:22:09,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:09,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:09,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times [2024-11-05 10:22:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:09,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304704591] [2024-11-05 10:22:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:09,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:09,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:09,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:09,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-05 10:22:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:10,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-05 10:22:10,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:10,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:11,226 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:11,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304704591] [2024-11-05 10:22:11,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1304704591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 10:22:11,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 10:22:11,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-05 10:22:11,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364533232] [2024-11-05 10:22:11,227 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 10:22:11,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 10:22:11,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 10:22:11,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-05 10:22:11,229 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2024-11-05 10:22:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:11,658 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-11-05 10:22:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 10:22:11,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 14 [2024-11-05 10:22:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:11,662 INFO L225 Difference]: With dead ends: 21 [2024-11-05 10:22:11,663 INFO L226 Difference]: Without dead ends: 19 [2024-11-05 10:22:11,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2024-11-05 10:22:11,664 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:11,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 10:22:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-05 10:22:11,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-05 10:22:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 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) [2024-11-05 10:22:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-05 10:22:11,671 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2024-11-05 10:22:11,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:11,671 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-05 10:22:11,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2024-11-05 10:22:11,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-05 10:22:11,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-05 10:22:11,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:11,673 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-05 10:22:11,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-05 10:22:11,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:11,874 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:11,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:11,875 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 4 times [2024-11-05 10:22:11,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:11,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854773174] [2024-11-05 10:22:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:11,875 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 [2024-11-05 10:22:11,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:11,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:11,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-05 10:22:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:13,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-05 10:22:13,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:13,572 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:14,076 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:14,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854773174] [2024-11-05 10:22:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1854773174] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 10:22:14,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 10:22:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-05 10:22:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543793501] [2024-11-05 10:22:14,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 10:22:14,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-05 10:22:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-05 10:22:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-05 10:22:14,079 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-05 10:22:14,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:14,543 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2024-11-05 10:22:14,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-05 10:22:14,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 17 [2024-11-05 10:22:14,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:14,544 INFO L225 Difference]: With dead ends: 24 [2024-11-05 10:22:14,544 INFO L226 Difference]: Without dead ends: 22 [2024-11-05 10:22:14,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-05 10:22:14,546 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:14,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 10:22:14,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-05 10:22:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2024-11-05 10:22:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2024-11-05 10:22:14,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2024-11-05 10:22:14,550 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2024-11-05 10:22:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:14,550 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2024-11-05 10:22:14,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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) [2024-11-05 10:22:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2024-11-05 10:22:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-05 10:22:14,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:14,551 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1] [2024-11-05 10:22:14,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-05 10:22:14,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:14,752 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:14,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:14,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1003628899, now seen corresponding path program 5 times [2024-11-05 10:22:14,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:14,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872884012] [2024-11-05 10:22:14,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:14,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:14,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:14,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:14,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-05 10:22:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:16,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-05 10:22:16,613 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 10:22:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:16,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 10:22:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 10:22:17,492 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 10:22:17,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872884012] [2024-11-05 10:22:17,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1872884012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-05 10:22:17,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-05 10:22:17,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-05 10:22:17,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304042993] [2024-11-05 10:22:17,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-05 10:22:17,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-05 10:22:17,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 10:22:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-05 10:22:17,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-05 10:22:17,494 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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) [2024-11-05 10:22:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 10:22:17,945 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-11-05 10:22:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-05 10:22:17,948 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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 20 [2024-11-05 10:22:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 10:22:17,949 INFO L225 Difference]: With dead ends: 27 [2024-11-05 10:22:17,949 INFO L226 Difference]: Without dead ends: 25 [2024-11-05 10:22:17,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2024-11-05 10:22:17,950 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 10:22:17,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 10:22:17,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-05 10:22:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-05 10:22:17,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 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) [2024-11-05 10:22:17,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-11-05 10:22:17,957 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2024-11-05 10:22:17,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 10:22:17,958 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-11-05 10:22:17,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 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) [2024-11-05 10:22:17,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-11-05 10:22:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-05 10:22:17,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 10:22:17,959 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1] [2024-11-05 10:22:17,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-05 10:22:18,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:18,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 10:22:18,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 10:22:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1845955269, now seen corresponding path program 6 times [2024-11-05 10:22:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 10:22:18,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096503985] [2024-11-05 10:22:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 10:22:18,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 10:22:18,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 10:22:18,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 10:22:18,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-05 10:22:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 10:22:20,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-05 10:22:20,326 INFO L278 TraceCheckSpWp]: Computing forward predicates...