/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.cal24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 15:07:43,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 15:07:43,865 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 15:07:43,870 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 15:07:43,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 15:07:43,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 15:07:43,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 15:07:43,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 15:07:43,886 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 15:07:43,886 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 15:07:43,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 15:07:43,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 15:07:43,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 15:07:43,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 15:07:43,888 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 15:07:43,889 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 15:07:43,889 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 15:07:43,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 15:07:43,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 15:07:43,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 15:07:43,890 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 15:07:43,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 15:07:43,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 15:07:43,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 15:07:43,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 15:07:43,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 15:07:43,895 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:07:43,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 15:07:43,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 15:07:43,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 15:07:43,895 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 15:07:43,896 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 15:07:43,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 15:07:43,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 15:07:43,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 15:07:43,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 15:07:43,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 15:07:44,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 15:07:44,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 15:07:44,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 15:07:44,085 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 15:07:44,085 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 15:07:44,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal24.c [2024-11-06 15:07:45,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 15:07:45,681 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 15:07:45,682 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.cal24.c [2024-11-06 15:07:45,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4647cf0f3/9d81ed0505d14a1cbd9672d61e9fb534/FLAG79a451485 [2024-11-06 15:07:45,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4647cf0f3/9d81ed0505d14a1cbd9672d61e9fb534 [2024-11-06 15:07:45,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 15:07:45,741 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 15:07:45,743 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 15:07:45,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 15:07:45,746 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 15:07:45,747 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:07:45" (1/1) ... [2024-11-06 15:07:45,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61c761a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:45, skipping insertion in model container [2024-11-06 15:07:45,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:07:45" (1/1) ... [2024-11-06 15:07:45,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 15:07:46,110 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.cal24.c[1245,1258] [2024-11-06 15:07:46,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:07:46,733 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 15:07:46,742 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.cal24.c[1245,1258] [2024-11-06 15:07:47,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 15:07:47,189 INFO L204 MainTranslator]: Completed translation [2024-11-06 15:07:47,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47 WrapperNode [2024-11-06 15:07:47,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 15:07:47,190 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 15:07:47,190 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 15:07:47,190 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 15:07:47,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,524 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11280 [2024-11-06 15:07:47,525 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 15:07:47,525 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 15:07:47,525 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 15:07:47,525 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 15:07:47,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,664 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,745 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-06 15:07:47,745 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,963 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 15:07:47,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 15:07:47,964 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 15:07:47,964 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 15:07:47,965 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (1/1) ... [2024-11-06 15:07:47,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 15:07:47,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:07:47,989 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 15:07:47,990 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 15:07:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 15:07:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 15:07:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-06 15:07:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 15:07:48,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 15:07:48,870 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 15:07:48,871 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 15:08:54,631 INFO L? ?]: Removed 239 outVars from TransFormulas that were not future-live. [2024-11-06 15:08:54,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 15:08:54,639 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 15:08:54,639 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 15:08:54,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:08:54 BoogieIcfgContainer [2024-11-06 15:08:54,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 15:08:54,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 15:08:54,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 15:08:54,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 15:08:54,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:07:45" (1/3) ... [2024-11-06 15:08:54,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cb5366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:08:54, skipping insertion in model container [2024-11-06 15:08:54,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:07:47" (2/3) ... [2024-11-06 15:08:54,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cb5366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:08:54, skipping insertion in model container [2024-11-06 15:08:54,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:08:54" (3/3) ... [2024-11-06 15:08:54,648 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal24.c [2024-11-06 15:08:54,658 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 15:08:54,658 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 15:08:54,690 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 15:08:54,694 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;@2ef8a294, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 15:08:54,694 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 15:08:54,697 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 15:08:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-06 15:08:54,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:08:54,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-06 15:08:54,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:08:54,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:08:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-11-06 15:08:54,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:08:54,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732342029] [2024-11-06 15:08:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:08:54,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:08:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:08:54,717 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 15:08:54,717 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 15:08:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:08:56,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-06 15:08:56,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:08:56,181 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 15:08:56,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 15:08:56,182 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:08:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732342029] [2024-11-06 15:08:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732342029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 15:08:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 15:08:56,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 15:08:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930075505] [2024-11-06 15:08:56,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 15:08:56,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 15:08:56,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:08:56,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 15:08:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 15:08:56,201 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 15:08:57,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 15:08:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:08:57,730 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-11-06 15:08:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 15:08:57,731 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 15:08:57,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:08:57,736 INFO L225 Difference]: With dead ends: 18 [2024-11-06 15:08:57,736 INFO L226 Difference]: Without dead ends: 10 [2024-11-06 15:08:57,737 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 15:08:57,740 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.5s IncrementalHoareTripleChecker+Time [2024-11-06 15:08:57,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-06 15:08:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-06 15:08:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-06 15:08:57,758 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 15:08:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-11-06 15:08:57,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-11-06 15:08:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:08:57,760 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-11-06 15:08:57,760 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 15:08:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-11-06 15:08:57,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-06 15:08:57,760 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:08:57,760 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-06 15:08:57,778 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 15:08:57,962 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 15:08:57,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:08:57,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:08:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-11-06 15:08:57,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:08:57,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628438673] [2024-11-06 15:08:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 15:08:57,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:08:57,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:08:57,976 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 15:08:57,978 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 15:08:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 15:08:59,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-06 15:08:59,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 15:09:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 15:09:00,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 15:09:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 15:09:14,390 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 15:09:14,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628438673] [2024-11-06 15:09:14,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628438673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 15:09:14,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 15:09:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-06 15:09:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023549262] [2024-11-06 15:09:14,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 15:09:14,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 15:09:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 15:09:14,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 15:09:14,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2024-11-06 15:09:14,393 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) [2024-11-06 15:09:15,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 15:09:18,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2024-11-06 15:09:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 15:09:18,497 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2024-11-06 15:09:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 15:09:18,497 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 [2024-11-06 15:09:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 15:09:18,498 INFO L225 Difference]: With dead ends: 15 [2024-11-06 15:09:18,498 INFO L226 Difference]: Without dead ends: 13 [2024-11-06 15:09:18,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=50, Invalid=105, Unknown=1, NotChecked=0, Total=156 [2024-11-06 15:09:18,499 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-06 15:09:18,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-06 15:09:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-06 15:09:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2024-11-06 15:09:18,502 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) [2024-11-06 15:09:18,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-11-06 15:09:18,502 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-11-06 15:09:18,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 15:09:18,502 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-11-06 15:09:18,503 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) [2024-11-06 15:09:18,503 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-11-06 15:09:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-06 15:09:18,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 15:09:18,503 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-06 15:09:18,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-06 15:09:18,703 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 [2024-11-06 15:09:18,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 15:09:18,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 15:09:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-11-06 15:09:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 15:09:18,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318888778] [2024-11-06 15:09:18,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 15:09:18,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 15:09:18,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 15:09:18,711 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) [2024-11-06 15:09:18,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process