/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.3.prop1-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 04:08:20,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 04:08:20,807 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 04:08:20,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 04:08:20,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 04:08:20,840 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 04:08:20,840 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 04:08:20,841 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 04:08:20,841 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 04:08:20,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 04:08:20,842 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 04:08:20,843 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 04:08:20,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 04:08:20,846 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 04:08:20,847 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 04:08:20,847 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 04:08:20,847 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 04:08:20,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 04:08:20,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 04:08:20,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 04:08:20,848 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 04:08:20,848 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 04:08:20,849 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 04:08:20,849 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 04:08:20,849 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 04:08:20,849 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 04:08:20,850 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 04:08:20,850 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 04:08:20,850 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 04:08:20,850 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 04:08:20,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 04:08:20,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 04:08:20,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 04:08:20,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 04:08:20,851 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 04:08:20,852 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 04:08:20,852 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 04:08:20,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 04:08:20,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 04:08:20,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 04:08:20,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 04:08:20,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-05 04:08:21,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 04:08:21,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 04:08:21,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 04:08:21,119 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 04:08:21,120 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 04:08:21,121 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.3.prop1-back-serstep.c [2024-11-05 04:08:22,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 04:08:22,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 04:08:22,909 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.needham.3.prop1-back-serstep.c [2024-11-05 04:08:22,938 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d34f782/174d6be89ede4a85ad44102f22337756/FLAG617a38ff1 [2024-11-05 04:08:22,954 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72d34f782/174d6be89ede4a85ad44102f22337756 [2024-11-05 04:08:22,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 04:08:22,958 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 04:08:22,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 04:08:22,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 04:08:22,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 04:08:22,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:08:22" (1/1) ... [2024-11-05 04:08:22,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3533d3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:22, skipping insertion in model container [2024-11-05 04:08:22,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 04:08:22" (1/1) ... [2024-11-05 04:08:23,092 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 04:08:23,332 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.needham.3.prop1-back-serstep.c[1175,1188] [2024-11-05 04:08:23,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 04:08:23,839 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 04:08:23,850 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.needham.3.prop1-back-serstep.c[1175,1188] [2024-11-05 04:08:24,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 04:08:24,163 INFO L204 MainTranslator]: Completed translation [2024-11-05 04:08:24,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24 WrapperNode [2024-11-05 04:08:24,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 04:08:24,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 04:08:24,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 04:08:24,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 04:08:24,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,562 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5958 [2024-11-05 04:08:24,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 04:08:24,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 04:08:24,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 04:08:24,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 04:08:24,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,693 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 04:08:24,694 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 04:08:24,905 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 04:08:24,905 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 04:08:24,905 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 04:08:24,906 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (1/1) ... [2024-11-05 04:08:24,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 04:08:24,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 04:08:24,933 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 04:08:24,935 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 04:08:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 04:08:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 04:08:24,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 04:08:24,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 04:08:25,695 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 04:08:25,697 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 04:08:40,501 INFO L? ?]: Removed 471 outVars from TransFormulas that were not future-live. [2024-11-05 04:08:40,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 04:08:40,511 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 04:08:40,512 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-05 04:08:40,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:08:40 BoogieIcfgContainer [2024-11-05 04:08:40,512 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 04:08:40,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 04:08:40,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 04:08:40,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 04:08:40,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 04:08:22" (1/3) ... [2024-11-05 04:08:40,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6977c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:08:40, skipping insertion in model container [2024-11-05 04:08:40,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 04:08:24" (2/3) ... [2024-11-05 04:08:40,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6977c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 04:08:40, skipping insertion in model container [2024-11-05 04:08:40,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 04:08:40" (3/3) ... [2024-11-05 04:08:40,519 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.needham.3.prop1-back-serstep.c [2024-11-05 04:08:40,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 04:08:40,534 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 04:08:40,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 04:08:40,589 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;@2603fe9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 04:08:40,589 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 04:08:40,593 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 04:08:40,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-05 04:08:40,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 04:08:40,598 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-05 04:08:40,598 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 04:08:40,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 04:08:40,603 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-05 04:08:40,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 04:08:40,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278662568] [2024-11-05 04:08:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 04:08:40,613 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 04:08:40,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 04:08:40,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 04:08:40,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-05 04:08:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 04:08:41,928 WARN L253 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 562 conjuncts are in the unsatisfiable core [2024-11-05 04:08:42,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 04:09:02,235 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 04:09:02,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 04:09:08,112 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 04:09:08,113 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 04:09:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278662568] [2024-11-05 04:09:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [278662568] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 04:09:08,114 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 04:09:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-05 04:09:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683372353] [2024-11-05 04:09:08,116 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 04:09:08,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 04:09:08,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 04:09:08,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 04:09:08,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-05 04:09:08,141 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 04:09:14,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 04:09:17,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 04:09:19,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 04:09:24,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 04:09:29,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-05 04:09:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 04:09:29,316 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2024-11-05 04:09:29,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 04:09:29,409 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 04:09:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 04:09:29,414 INFO L225 Difference]: With dead ends: 21 [2024-11-05 04:09:29,414 INFO L226 Difference]: Without dead ends: 13 [2024-11-05 04:09:29,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-05 04:09:29,418 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2024-11-05 04:09:29,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2024-11-05 04:09:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-05 04:09:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-05 04:09:29,445 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 04:09:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-05 04:09:29,447 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2024-11-05 04:09:29,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 04:09:29,448 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-05 04:09:29,448 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 04:09:29,448 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-05 04:09:29,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-05 04:09:29,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 04:09:29,449 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-05 04:09:29,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-05 04:09:29,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-05 04:09:29,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 04:09:29,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 04:09:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 1 times [2024-11-05 04:09:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 04:09:29,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695736705] [2024-11-05 04:09:29,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 04:09:29,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-05 04:09:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-05 04:09:29,653 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-05 04:09:29,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-05 04:09:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 04:09:33,841 WARN L253 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 1444 conjuncts are in the unsatisfiable core [2024-11-05 04:09:33,994 INFO L278 TraceCheckSpWp]: Computing forward predicates...