/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 17:11:58,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 17:11:58,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 17:11:58,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 17:11:58,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 17:11:58,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 17:11:58,816 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 17:11:58,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 17:11:58,817 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 17:11:58,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 17:11:58,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 17:11:58,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 17:11:58,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 17:11:58,822 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 17:11:58,822 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 17:11:58,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 17:11:58,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 17:11:58,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 17:11:58,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 17:11:58,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 17:11:58,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 17:11:58,825 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 17:11:58,825 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 17:11:58,825 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 17:11:58,826 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 17:11:58,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 17:11:58,826 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 17:11:58,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 17:11:58,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 17:11:58,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 17:11:58,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 17:11:58,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 17:11:58,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 17:11:58,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 17:11:58,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 17:11:58,828 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 17:11:58,828 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 17:11:58,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 17:11:58,828 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 17:11:58,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 17:11:58,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 17:11:58,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:11:59,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 17:11:59,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 17:11:59,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 17:11:59,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 17:11:59,065 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 17:11:59,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-04 17:12:00,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 17:12:00,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 17:12:00,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-04 17:12:00,565 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dbc2932b/aed1905ff31e4f99ad280d36f74bc4d0/FLAGd552a6581 [2024-11-04 17:12:00,968 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dbc2932b/aed1905ff31e4f99ad280d36f74bc4d0 [2024-11-04 17:12:00,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 17:12:00,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 17:12:00,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 17:12:00,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 17:12:00,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 17:12:00,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:12:00" (1/1) ... [2024-11-04 17:12:00,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5387d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:00, skipping insertion in model container [2024-11-04 17:12:00,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:12:00" (1/1) ... [2024-11-04 17:12:01,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 17:12:01,245 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.vcegar_QF_BV_itc99_b13_p09.c[1266,1279] [2024-11-04 17:12:01,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 17:12:01,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 17:12:01,361 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.vcegar_QF_BV_itc99_b13_p09.c[1266,1279] [2024-11-04 17:12:01,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 17:12:01,401 INFO L204 MainTranslator]: Completed translation [2024-11-04 17:12:01,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01 WrapperNode [2024-11-04 17:12:01,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 17:12:01,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 17:12:01,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 17:12:01,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 17:12:01,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,441 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 262 [2024-11-04 17:12:01,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 17:12:01,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 17:12:01,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 17:12:01,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 17:12:01,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,469 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]. [2024-11-04 17:12:01,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,475 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,479 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 17:12:01,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 17:12:01,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 17:12:01,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 17:12:01,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (1/1) ... [2024-11-04 17:12:01,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 17:12:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:01,510 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) [2024-11-04 17:12:01,513 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 [2024-11-04 17:12:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 17:12:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 17:12:01,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 17:12:01,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 17:12:01,645 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 17:12:01,646 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 17:12:01,896 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-04 17:12:01,896 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 17:12:01,907 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 17:12:01,907 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 17:12:01,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:12:01 BoogieIcfgContainer [2024-11-04 17:12:01,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 17:12:01,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 17:12:01,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 17:12:01,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 17:12:01,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:12:00" (1/3) ... [2024-11-04 17:12:01,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:12:01, skipping insertion in model container [2024-11-04 17:12:01,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:12:01" (2/3) ... [2024-11-04 17:12:01,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162f21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:12:01, skipping insertion in model container [2024-11-04 17:12:01,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:12:01" (3/3) ... [2024-11-04 17:12:01,921 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p09.c [2024-11-04 17:12:01,935 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 17:12:01,936 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 17:12:01,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 17:12:01,987 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;@7e16a997, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 17:12:01,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 17:12:01,994 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) [2024-11-04 17:12:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-04 17:12:01,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 17:12:01,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-04 17:12:01,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 17:12:02,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 17:12:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-04 17:12:02,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 17:12:02,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570157791] [2024-11-04 17:12:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 17:12:02,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:02,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:02,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 17:12:02,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-04 17:12:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 17:12:02,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-04 17:12:02,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 17:12:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:02,348 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 17:12:02,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:02,493 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 17:12:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570157791] [2024-11-04 17:12:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1570157791] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 17:12:02,494 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 17:12:02,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-04 17:12:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756019045] [2024-11-04 17:12:02,496 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 17:12:02,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-04 17:12:02,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 17:12:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-04 17:12:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 17:12:02,520 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) [2024-11-04 17:12:02,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 17:12:02,563 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-04 17:12:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 17:12:02,565 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 [2024-11-04 17:12:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 17:12:02,575 INFO L225 Difference]: With dead ends: 18 [2024-11-04 17:12:02,575 INFO L226 Difference]: Without dead ends: 10 [2024-11-04 17:12:02,578 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 [2024-11-04 17:12:02,584 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 17:12:02,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 17:12:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-04 17:12:02,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-04 17:12:02,628 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) [2024-11-04 17:12:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-04 17:12:02,650 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-04 17:12:02,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 17:12:02,650 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-04 17:12:02,650 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) [2024-11-04 17:12:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-04 17:12:02,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-04 17:12:02,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 17:12:02,652 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-04 17:12:02,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-04 17:12:02,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:02,853 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 17:12:02,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 17:12:02,854 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-04 17:12:02,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 17:12:02,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465610426] [2024-11-04 17:12:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 17:12:02,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:02,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:02,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 17:12:02,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-04 17:12:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 17:12:02,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-04 17:12:02,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 17:12:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:03,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 17:12:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:03,449 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 17:12:03,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465610426] [2024-11-04 17:12:03,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1465610426] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 17:12:03,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 17:12:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-04 17:12:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990263659] [2024-11-04 17:12:03,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 17:12:03,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-04 17:12:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 17:12:03,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-04 17:12:03,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-04 17:12:03,452 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2024-11-04 17:12:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 17:12:03,517 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-11-04 17:12:03,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-04 17:12:03,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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 [2024-11-04 17:12:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 17:12:03,518 INFO L225 Difference]: With dead ends: 15 [2024-11-04 17:12:03,518 INFO L226 Difference]: Without dead ends: 13 [2024-11-04 17:12:03,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-04 17:12:03,520 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 17:12:03,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 17:12:03,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-04 17:12:03,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-04 17:12:03,525 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) [2024-11-04 17:12:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-04 17:12:03,525 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-04 17:12:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 17:12:03,526 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-04 17:12:03,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 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) [2024-11-04 17:12:03,526 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-04 17:12:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-04 17:12:03,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 17:12:03,527 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-04 17:12:03,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-04 17:12:03,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:03,729 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 17:12:03,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 17:12:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-04 17:12:03,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 17:12:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166194956] [2024-11-04 17:12:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 17:12:03,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:03,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:03,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 17:12:03,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-04 17:12:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 17:12:03,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-04 17:12:03,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 17:12:04,003 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:04,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 17:12:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:05,842 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 17:12:05,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166194956] [2024-11-04 17:12:05,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1166194956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 17:12:05,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 17:12:05,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-04 17:12:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934486192] [2024-11-04 17:12:05,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 17:12:05,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-04 17:12:05,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 17:12:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-04 17:12:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-04 17:12:05,844 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2024-11-04 17:12:05,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 17:12:05,919 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-11-04 17:12:05,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-04 17:12:05,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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 [2024-11-04 17:12:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 17:12:05,920 INFO L225 Difference]: With dead ends: 18 [2024-11-04 17:12:05,920 INFO L226 Difference]: Without dead ends: 16 [2024-11-04 17:12:05,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-04 17:12:05,921 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 17:12:05,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 17:12:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-04 17:12:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2024-11-04 17:12:05,923 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) [2024-11-04 17:12:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2024-11-04 17:12:05,924 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2024-11-04 17:12:05,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 17:12:05,924 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2024-11-04 17:12:05,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 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) [2024-11-04 17:12:05,924 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2024-11-04 17:12:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-04 17:12:05,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 17:12:05,924 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2024-11-04 17:12:05,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-04 17:12:06,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:06,129 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 17:12:06,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 17:12:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 3 times [2024-11-04 17:12:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 17:12:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869534162] [2024-11-04 17:12:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 17:12:06,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:06,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:06,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 17:12:06,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-04 17:12:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 17:12:06,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-04 17:12:06,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 17:12:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:06,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 17:12:15,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:15,136 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 17:12:15,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869534162] [2024-11-04 17:12:15,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [869534162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 17:12:15,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 17:12:15,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-04 17:12:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013907809] [2024-11-04 17:12:15,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 17:12:15,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-04 17:12:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 17:12:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-04 17:12:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-04 17:12:15,138 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2024-11-04 17:12:15,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 17:12:15,275 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2024-11-04 17:12:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-04 17:12:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 [2024-11-04 17:12:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 17:12:15,278 INFO L225 Difference]: With dead ends: 21 [2024-11-04 17:12:15,278 INFO L226 Difference]: Without dead ends: 19 [2024-11-04 17:12:15,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-04 17:12:15,279 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-04 17:12:15,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-04 17:12:15,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-04 17:12:15,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2024-11-04 17:12:15,286 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) [2024-11-04 17:12:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2024-11-04 17:12:15,286 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2024-11-04 17:12:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 17:12:15,287 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2024-11-04 17:12:15,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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) [2024-11-04 17:12:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2024-11-04 17:12:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-04 17:12:15,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 17:12:15,287 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-11-04 17:12:15,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-04 17:12:15,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:15,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 17:12:15,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 17:12:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 4 times [2024-11-04 17:12:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 17:12:15,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1331174984] [2024-11-04 17:12:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 17:12:15,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:15,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 17:12:15,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-04 17:12:15,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-04 17:12:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 17:12:15,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-04 17:12:15,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 17:12:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:15,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 17:12:37,709 WARN L286 SmtUtils]: Spent 5.89s on a formula simplification. DAG size of input: 676 DAG size of output: 663 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-04 17:12:53,948 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 17:12:53,948 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 17:12:53,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1331174984] [2024-11-04 17:12:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1331174984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-04 17:12:53,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-04 17:12:53,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-04 17:12:53,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270327508] [2024-11-04 17:12:53,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-04 17:12:53,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-04 17:12:53,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 17:12:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-04 17:12:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-04 17:12:53,952 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2024-11-04 17:12:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 17:12:53,986 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2024-11-04 17:12:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-04 17:12:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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 [2024-11-04 17:12:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 17:12:53,987 INFO L225 Difference]: With dead ends: 18 [2024-11-04 17:12:53,987 INFO L226 Difference]: Without dead ends: 0 [2024-11-04 17:12:53,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-04 17:12:53,988 INFO L432 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 17:12:53,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 17:12:53,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-04 17:12:53,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-04 17:12:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2024-11-04 17:12:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-04 17:12:53,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2024-11-04 17:12:53,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 17:12:53,989 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-04 17:12:53,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 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) [2024-11-04 17:12:53,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-04 17:12:53,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-04 17:12:53,992 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-04 17:12:54,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-04 17:12:54,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-04 17:12:54,199 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1] [2024-11-04 17:12:54,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-04 17:12:54,220 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-04 17:12:54,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.11 05:12:54 BoogieIcfgContainer [2024-11-04 17:12:54,237 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-04 17:12:54,238 INFO L158 Benchmark]: Toolchain (without parser) took 53264.94ms. Allocated memory was 361.8MB in the beginning and 1.2GB in the end (delta: 871.4MB). Free memory was 303.9MB in the beginning and 609.3MB in the end (delta: -305.3MB). Peak memory consumption was 566.7MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,238 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 204.5MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-04 17:12:54,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 425.16ms. Allocated memory is still 361.8MB. Free memory was 303.9MB in the beginning and 286.8MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.41ms. Allocated memory is still 361.8MB. Free memory was 286.8MB in the beginning and 284.0MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,239 INFO L158 Benchmark]: Boogie Preprocessor took 39.79ms. Allocated memory is still 361.8MB. Free memory was 284.0MB in the beginning and 281.2MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,239 INFO L158 Benchmark]: RCFGBuilder took 424.59ms. Allocated memory is still 361.8MB. Free memory was 280.9MB in the beginning and 315.3MB in the end (delta: -34.4MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,239 INFO L158 Benchmark]: TraceAbstraction took 52320.98ms. Allocated memory was 361.8MB in the beginning and 1.2GB in the end (delta: 871.4MB). Free memory was 314.8MB in the beginning and 609.3MB in the end (delta: -294.5MB). Peak memory consumption was 576.4MB. Max. memory is 8.0GB. [2024-11-04 17:12:54,241 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 204.5MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 425.16ms. Allocated memory is still 361.8MB. Free memory was 303.9MB in the beginning and 286.8MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.41ms. Allocated memory is still 361.8MB. Free memory was 286.8MB in the beginning and 284.0MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.79ms. Allocated memory is still 361.8MB. Free memory was 284.0MB in the beginning and 281.2MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 424.59ms. Allocated memory is still 361.8MB. Free memory was 280.9MB in the beginning and 315.3MB in the end (delta: -34.4MB). Peak memory consumption was 16.6MB. Max. memory is 8.0GB. * TraceAbstraction took 52320.98ms. Allocated memory was 361.8MB in the beginning and 1.2GB in the end (delta: 871.4MB). Free memory was 314.8MB in the beginning and 609.3MB in the end (delta: -294.5MB). Peak memory consumption was 576.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.2s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 88 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 18 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=4, InterpolantAutomatonStates: 32, 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, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 50.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 100 ConstructedInterpolants, 35 QuantifiedInterpolants, 67762 SizeOfPredicates, 31 NumberOfNonLiveVariables, 600 ConjunctsInSsa, 152 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 0/100 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 92]: Loop Invariant Derived loop invariant: ((((((((0 == var_7) && (0 == state_27)) && (0 == state_8)) && (0 == var_12)) && (1 == mask_SORT_1)) && (0 == state_61)) && (0 == state_57)) && (0 == state_40)) RESULT: Ultimate proved your program to be correct! [2024-11-04 17:12:54,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...