/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 'cvc4 --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.arbitrated_top_n2_w8_d32_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-11-01 08:04:46,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-01 08:04:46,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-01 08:04:46,572 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-01 08:04:46,572 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-01 08:04:46,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-01 08:04:46,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-01 08:04:46,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-01 08:04:46,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-01 08:04:46,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-01 08:04:46,622 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-01 08:04:46,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-01 08:04:46,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-01 08:04:46,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-01 08:04:46,628 INFO L153 SettingsManager]: * Use SBE=true [2024-11-01 08:04:46,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-01 08:04:46,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-01 08:04:46,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-01 08:04:46,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-01 08:04:46,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-01 08:04:46,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-01 08:04:46,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-01 08:04:46,630 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-01 08:04:46,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-01 08:04:46,631 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-01 08:04:46,631 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-01 08:04:46,631 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-01 08:04:46,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-01 08:04:46,632 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-01 08:04:46,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-01 08:04:46,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-01 08:04:46,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:04:46,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-01 08:04:46,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-01 08:04:46,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-01 08:04:46,635 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-01 08:04:46,636 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:46,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-01 08:04:46,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-01 08:04:46,636 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-01 08:04:46,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-01 08:04:46,637 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-11-01 08:04:46,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:46,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-01 08:04:46,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-01 08:04:46,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-01 08:04:46,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-01 08:04:46,968 INFO L274 PluginConnector]: CDTParser initialized [2024-11-01 08:04:46,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w8_d32_e0.c [2024-11-01 08:04:48,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-01 08:04:48,886 INFO L384 CDTParser]: Found 1 translation units. [2024-11-01 08:04:48,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n2_w8_d32_e0.c [2024-11-01 08:04:48,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c2cb2e2/48288c3ff9364dabb35cecaed04100b6/FLAG6a9f7d51a [2024-11-01 08:04:48,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54c2cb2e2/48288c3ff9364dabb35cecaed04100b6 [2024-11-01 08:04:48,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-01 08:04:48,939 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-01 08:04:48,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-01 08:04:48,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-01 08:04:48,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-01 08:04:48,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:04:48" (1/1) ... [2024-11-01 08:04:48,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71de2a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:48, skipping insertion in model container [2024-11-01 08:04:48,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.11 08:04:48" (1/1) ... [2024-11-01 08:04:49,027 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-01 08:04:49,236 WARN L251 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.arbitrated_top_n2_w8_d32_e0.c[1270,1283] [2024-11-01 08:04:49,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:04:49,598 INFO L200 MainTranslator]: Completed pre-run [2024-11-01 08:04:49,609 WARN L251 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.arbitrated_top_n2_w8_d32_e0.c[1270,1283] [2024-11-01 08:04:49,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-01 08:04:49,796 INFO L204 MainTranslator]: Completed translation [2024-11-01 08:04:49,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49 WrapperNode [2024-11-01 08:04:49,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-01 08:04:49,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-01 08:04:49,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-01 08:04:49,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-01 08:04:49,804 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:49,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,035 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2591 [2024-11-01 08:04:50,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-01 08:04:50,037 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-01 08:04:50,037 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-01 08:04:50,037 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-01 08:04:50,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,047 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,073 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,136 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]. [2024-11-01 08:04:50,137 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,186 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,195 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,223 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-01 08:04:50,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-01 08:04:50,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-01 08:04:50,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-01 08:04:50,247 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (1/1) ... [2024-11-01 08:04:50,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-01 08:04:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-01 08:04:50,277 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) [2024-11-01 08:04:50,281 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 [2024-11-01 08:04:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-01 08:04:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-01 08:04:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-01 08:04:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-01 08:04:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-01 08:04:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-01 08:04:50,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-01 08:04:50,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-01 08:04:52,828 INFO L? ?]: Removed 753 outVars from TransFormulas that were not future-live. [2024-11-01 08:04:52,829 INFO L287 CfgBuilder]: Performing block encoding [2024-11-01 08:04:52,841 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-01 08:04:52,841 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-01 08:04:52,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:04:52 BoogieIcfgContainer [2024-11-01 08:04:52,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-01 08:04:52,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-01 08:04:52,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-01 08:04:52,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-01 08:04:52,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.11 08:04:48" (1/3) ... [2024-11-01 08:04:52,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5e37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:04:52, skipping insertion in model container [2024-11-01 08:04:52,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.11 08:04:49" (2/3) ... [2024-11-01 08:04:52,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5e37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.11 08:04:52, skipping insertion in model container [2024-11-01 08:04:52,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.11 08:04:52" (3/3) ... [2024-11-01 08:04:52,851 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n2_w8_d32_e0.c [2024-11-01 08:04:52,867 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-01 08:04:52,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-01 08:04:52,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-01 08:04:52,933 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;@53261ca5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-01 08:04:52,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-01 08:04:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-01 08:04:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 08:04:52,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:52,948 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 08:04:52,948 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:52,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:52,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1387212075, now seen corresponding path program 1 times [2024-11-01 08:04:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:52,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477071166] [2024-11-01 08:04:52,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:52,964 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:52,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:52,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:52,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-01 08:04:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:54,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-01 08:04:54,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-01 08:04:54,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-01 08:04:54,306 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:04:54,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477071166] [2024-11-01 08:04:54,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1477071166] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:04:54,307 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:04:54,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-01 08:04:54,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188182265] [2024-11-01 08:04:54,309 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:04:54,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-01 08:04:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:04:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-01 08:04:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 08:04:54,341 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-01 08:04:54,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:04:54,359 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2024-11-01 08:04:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-01 08:04:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 47 [2024-11-01 08:04:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:04:54,367 INFO L225 Difference]: With dead ends: 51 [2024-11-01 08:04:54,367 INFO L226 Difference]: Without dead ends: 25 [2024-11-01 08:04:54,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-01 08:04:54,376 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-01 08:04:54,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-01 08:04:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-01 08:04:54,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-01 08:04:54,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-01 08:04:54,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2024-11-01 08:04:54,412 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 47 [2024-11-01 08:04:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:04:54,412 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2024-11-01 08:04:54,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-01 08:04:54,413 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2024-11-01 08:04:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-01 08:04:54,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:54,416 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-01 08:04:54,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-01 08:04:54,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:54,621 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:54,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 971432711, now seen corresponding path program 1 times [2024-11-01 08:04:54,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:54,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057460226] [2024-11-01 08:04:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:54,623 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:54,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:54,625 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:54,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-01 08:04:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:55,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-01 08:04:55,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:04:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 08:04:56,189 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:04:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-01 08:04:56,594 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:04:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057460226] [2024-11-01 08:04:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2057460226] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-01 08:04:56,595 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-01 08:04:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-01 08:04:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741120965] [2024-11-01 08:04:56,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-01 08:04:56,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-01 08:04:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:04:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-01 08:04:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:04:56,598 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 08:04:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:04:56,954 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-01 08:04:56,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-01 08:04:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 47 [2024-11-01 08:04:56,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:04:56,956 INFO L225 Difference]: With dead ends: 43 [2024-11-01 08:04:56,956 INFO L226 Difference]: Without dead ends: 41 [2024-11-01 08:04:56,957 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-01 08:04:56,958 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-01 08:04:56,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-01 08:04:56,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-01 08:04:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-01 08:04:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-01 08:04:56,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-11-01 08:04:56,968 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 47 [2024-11-01 08:04:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:04:56,971 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-11-01 08:04:56,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-01 08:04:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-11-01 08:04:56,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-01 08:04:56,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:04:56,974 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-01 08:04:56,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-01 08:04:57,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:57,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:04:57,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:04:57,176 INFO L85 PathProgramCache]: Analyzing trace with hash 815302051, now seen corresponding path program 1 times [2024-11-01 08:04:57,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:04:57,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537268024] [2024-11-01 08:04:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:04:57,177 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:04:57,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:04:57,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:04:57,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-01 08:04:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:04:59,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-01 08:04:59,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:05:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-01 08:05:00,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:05:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-01 08:05:10,956 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:05:10,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537268024] [2024-11-01 08:05:10,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1537268024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-01 08:05:10,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-01 08:05:10,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-11-01 08:05:10,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642481002] [2024-11-01 08:05:10,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-01 08:05:10,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-01 08:05:10,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-01 08:05:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-01 08:05:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=172, Unknown=2, NotChecked=0, Total=210 [2024-11-01 08:05:10,961 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-01 08:05:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-01 08:05:11,878 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2024-11-01 08:05:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-01 08:05:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) Word has length 92 [2024-11-01 08:05:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-01 08:05:11,880 INFO L225 Difference]: With dead ends: 60 [2024-11-01 08:05:11,880 INFO L226 Difference]: Without dead ends: 58 [2024-11-01 08:05:11,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=67, Invalid=273, Unknown=2, NotChecked=0, Total=342 [2024-11-01 08:05:11,882 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-01 08:05:11,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 124 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-01 08:05:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-01 08:05:11,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-01 08:05:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-01 08:05:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-01 08:05:11,893 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 92 [2024-11-01 08:05:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-01 08:05:11,894 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-01 08:05:11,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 15 states have internal predecessors, (50), 8 states have call successors, (28), 1 states have call predecessors, (28), 2 states have return successors, (28), 6 states have call predecessors, (28), 8 states have call successors, (28) [2024-11-01 08:05:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-01 08:05:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-01 08:05:11,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-01 08:05:11,898 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-01 08:05:11,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-01 08:05:12,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:05:12,099 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-01 08:05:12,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-01 08:05:12,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1845464953, now seen corresponding path program 2 times [2024-11-01 08:05:12,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-01 08:05:12,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76173001] [2024-11-01 08:05:12,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-01 08:05:12,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-01 08:05:12,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-01 08:05:12,102 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-01 08:05:12,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-01 08:05:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-01 08:05:15,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-01 08:05:15,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-01 08:05:19,828 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 153 proven. 136 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2024-11-01 08:05:19,829 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-01 08:05:23,749 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-01 08:05:23,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-01 08:05:23,752 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-01 08:05:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76173001] [2024-11-01 08:05:23,752 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-01 08:05:23,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-01 08:05:23,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-01 08:05:23,954 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:553) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 44 more [2024-11-01 08:05:23,958 INFO L158 Benchmark]: Toolchain (without parser) took 35018.62ms. Allocated memory was 198.2MB in the beginning and 760.2MB in the end (delta: 562.0MB). Free memory was 160.0MB in the beginning and 325.7MB in the end (delta: -165.7MB). Peak memory consumption was 397.9MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,958 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory was 174.5MB in the beginning and 174.4MB in the end (delta: 65.5kB). There was no memory consumed. Max. memory is 8.0GB. [2024-11-01 08:05:23,958 INFO L158 Benchmark]: CACSL2BoogieTranslator took 856.28ms. Allocated memory is still 198.2MB. Free memory was 159.5MB in the beginning and 140.5MB in the end (delta: 18.9MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 237.80ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 140.5MB in the beginning and 207.9MB in the end (delta: -67.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,959 INFO L158 Benchmark]: Boogie Preprocessor took 207.47ms. Allocated memory is still 263.2MB. Free memory was 207.9MB in the beginning and 185.9MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,959 INFO L158 Benchmark]: RCFGBuilder took 2596.50ms. Allocated memory was 263.2MB in the beginning and 390.1MB in the end (delta: 126.9MB). Free memory was 185.9MB in the beginning and 238.5MB in the end (delta: -52.6MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,960 INFO L158 Benchmark]: TraceAbstraction took 31112.67ms. Allocated memory was 390.1MB in the beginning and 760.2MB in the end (delta: 370.1MB). Free memory was 238.0MB in the beginning and 325.7MB in the end (delta: -87.6MB). Peak memory consumption was 283.0MB. Max. memory is 8.0GB. [2024-11-01 08:05:23,961 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory was 174.5MB in the beginning and 174.4MB in the end (delta: 65.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 856.28ms. Allocated memory is still 198.2MB. Free memory was 159.5MB in the beginning and 140.5MB in the end (delta: 18.9MB). Peak memory consumption was 66.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 237.80ms. Allocated memory was 198.2MB in the beginning and 263.2MB in the end (delta: 65.0MB). Free memory was 140.5MB in the beginning and 207.9MB in the end (delta: -67.4MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 207.47ms. Allocated memory is still 263.2MB. Free memory was 207.9MB in the beginning and 185.9MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * RCFGBuilder took 2596.50ms. Allocated memory was 263.2MB in the beginning and 390.1MB in the end (delta: 126.9MB). Free memory was 185.9MB in the beginning and 238.5MB in the end (delta: -52.6MB). Peak memory consumption was 101.7MB. Max. memory is 8.0GB. * TraceAbstraction took 31112.67ms. Allocated memory was 390.1MB in the beginning and 760.2MB in the end (delta: 370.1MB). Free memory was 238.0MB in the beginning and 325.7MB in the end (delta: -87.6MB). Peak memory consumption was 283.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...