/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 --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.resistance.2.prop2-back-serstep.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 16:12:26,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 16:12:26,202 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 16:12:26,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 16:12:26,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 16:12:26,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 16:12:26,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 16:12:26,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 16:12:26,238 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 16:12:26,239 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 16:12:26,239 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 16:12:26,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 16:12:26,240 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 16:12:26,241 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 16:12:26,241 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 16:12:26,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 16:12:26,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 16:12:26,246 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 16:12:26,246 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 16:12:26,246 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 16:12:26,246 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 16:12:26,247 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 16:12:26,247 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 16:12:26,247 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 16:12:26,247 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 16:12:26,248 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 16:12:26,248 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 16:12:26,248 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 16:12:26,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 16:12:26,249 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 16:12:26,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 16:12:26,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 16:12:26,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 16:12:26,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 16:12:26,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 16:12:26,250 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 16:12:26,251 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 16:12:26,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 16:12:26,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 16:12:26,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 16:12:26,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 16:12:26,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 16:12:26,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 16:12:26,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 16:12:26,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 16:12:26,527 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 16:12:26,527 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 16:12:26,529 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.resistance.2.prop2-back-serstep.c [2024-11-06 16:12:28,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 16:12:28,474 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 16:12:28,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.resistance.2.prop2-back-serstep.c [2024-11-06 16:12:28,502 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/058db0a52/14837fd509c740dfbcc2d7e2eb16b8d3/FLAGecc8ec3ff [2024-11-06 16:12:28,693 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/058db0a52/14837fd509c740dfbcc2d7e2eb16b8d3 [2024-11-06 16:12:28,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 16:12:28,697 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 16:12:28,698 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 16:12:28,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 16:12:28,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 16:12:28,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:12:28" (1/1) ... [2024-11-06 16:12:28,709 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5c5abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:28, skipping insertion in model container [2024-11-06 16:12:28,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:12:28" (1/1) ... [2024-11-06 16:12:28,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 16:12:29,038 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.resistance.2.prop2-back-serstep.c[1178,1191] [2024-11-06 16:12:29,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 16:12:29,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 16:12:29,439 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.resistance.2.prop2-back-serstep.c[1178,1191] [2024-11-06 16:12:29,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 16:12:29,661 INFO L204 MainTranslator]: Completed translation [2024-11-06 16:12:29,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29 WrapperNode [2024-11-06 16:12:29,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 16:12:29,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 16:12:29,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 16:12:29,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 16:12:29,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,738 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,818 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2234 [2024-11-06 16:12:29,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 16:12:29,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 16:12:29,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 16:12:29,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 16:12:29,832 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,855 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,917 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]. [2024-11-06 16:12:29,918 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,918 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,960 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:29,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:30,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 16:12:30,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 16:12:30,012 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 16:12:30,012 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 16:12:30,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (1/1) ... [2024-11-06 16:12:30,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 16:12:30,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 16:12:30,063 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) [2024-11-06 16:12:30,074 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 [2024-11-06 16:12:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 16:12:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 16:12:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 16:12:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 16:12:30,470 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 16:12:30,473 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 16:12:34,763 INFO L? ?]: Removed 199 outVars from TransFormulas that were not future-live. [2024-11-06 16:12:34,764 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 16:12:34,777 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 16:12:34,777 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 16:12:34,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:12:34 BoogieIcfgContainer [2024-11-06 16:12:34,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 16:12:34,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 16:12:34,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 16:12:34,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 16:12:34,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:12:28" (1/3) ... [2024-11-06 16:12:34,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5d5d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:12:34, skipping insertion in model container [2024-11-06 16:12:34,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:12:29" (2/3) ... [2024-11-06 16:12:34,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5d5d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:12:34, skipping insertion in model container [2024-11-06 16:12:34,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:12:34" (3/3) ... [2024-11-06 16:12:34,789 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.resistance.2.prop2-back-serstep.c [2024-11-06 16:12:34,806 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 16:12:34,806 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 16:12:34,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 16:12:34,887 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;@328ad476, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 16:12:34,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 16:12:34,892 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) [2024-11-06 16:12:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-06 16:12:34,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 16:12:34,900 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-06 16:12:34,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 16:12:34,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 16:12:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-06 16:12:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 16:12:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1046229277] [2024-11-06 16:12:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 16:12:34,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 16:12:34,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 16:12:34,932 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) [2024-11-06 16:12:34,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 16:12:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 16:12:35,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-06 16:12:35,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 16:12:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 16:12:35,590 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 16:12:35,591 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 16:12:35,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046229277] [2024-11-06 16:12:35,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046229277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 16:12:35,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 16:12:35,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 16:12:35,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074110496] [2024-11-06 16:12:35,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 16:12:35,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 16:12:35,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 16:12:35,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 16:12:35,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 16:12:35,627 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-06 16:12:36,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 16:12:36,571 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-06 16:12:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 16:12:36,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 [2024-11-06 16:12:36,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 16:12:36,580 INFO L225 Difference]: With dead ends: 18 [2024-11-06 16:12:36,580 INFO L226 Difference]: Without dead ends: 10 [2024-11-06 16:12:36,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 16:12:36,586 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-06 16:12:36,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-06 16:12:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-06 16:12:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-06 16:12:36,617 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) [2024-11-06 16:12:36,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-06 16:12:36,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-06 16:12:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 16:12:36,621 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-06 16:12:36,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-11-06 16:12:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-06 16:12:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 16:12:36,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 16:12:36,623 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-06 16:12:36,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 16:12:36,824 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 [2024-11-06 16:12:36,824 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 16:12:36,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 16:12:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-06 16:12:36,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 16:12:36,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216989805] [2024-11-06 16:12:36,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 16:12:36,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 16:12:36,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 16:12:36,830 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) [2024-11-06 16:12:36,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 16:12:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 16:12:37,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-06 16:12:37,674 INFO L278 TraceCheckSpWp]: Computing forward predicates...