/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-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-14.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:53:58,492 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:53:58,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 00:53:58,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:53:58,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:53:58,576 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:53:58,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:53:58,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:53:58,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:53:58,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:53:58,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:53:58,578 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:53:58,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:53:58,579 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:53:58,580 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:53:58,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:53:58,581 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:53:58,581 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:53:58,581 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:53:58,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:53:58,582 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:53:58,585 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:53:58,586 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:53:58,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:53:58,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:53:58,587 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:53:58,587 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:53:58,587 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:53:58,587 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:53:58,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:53:58,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:53:58,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:53:58,588 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:53:58,588 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:53:58,588 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:53:58,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:53:58,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:53:58,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:53:58,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:53:58,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:53:58,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:53:58,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:53:58,807 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:53:58,807 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:53:58,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-14.i [2024-11-03 00:54:00,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:54:00,368 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:54:00,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-14.i [2024-11-03 00:54:00,387 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895d82261/a1c012b87e8543a7a6a916da9fecf755/FLAG323736d2f [2024-11-03 00:54:00,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/895d82261/a1c012b87e8543a7a6a916da9fecf755 [2024-11-03 00:54:00,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:54:00,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:54:00,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:54:00,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:54:00,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:54:00,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:54:00" (1/1) ... [2024-11-03 00:54:00,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3750e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:00, skipping insertion in model container [2024-11-03 00:54:00,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:54:00" (1/1) ... [2024-11-03 00:54:00,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:54:00,756 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-14.i[916,929] [2024-11-03 00:54:00,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:54:00,945 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:54:00,957 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-14.i[916,929] [2024-11-03 00:54:00,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:54:01,009 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:54:01,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01 WrapperNode [2024-11-03 00:54:01,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:54:01,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:54:01,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:54:01,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:54:01,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,029 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,055 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2024-11-03 00:54:01,056 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:54:01,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:54:01,056 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:54:01,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:54:01,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,068 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,078 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]. [2024-11-03 00:54:01,078 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,078 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:54:01,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:54:01,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:54:01,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:54:01,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (1/1) ... [2024-11-03 00:54:01,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:54:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:54:01,126 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) [2024-11-03 00:54:01,133 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 [2024-11-03 00:54:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:54:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:54:01,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:54:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:54:01,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:54:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:54:01,240 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:54:01,242 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:54:02,963 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-03 00:54:02,964 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:54:02,980 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:54:02,980 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:54:02,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:54:02 BoogieIcfgContainer [2024-11-03 00:54:02,982 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:54:02,984 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:54:02,984 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:54:02,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:54:02,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:54:00" (1/3) ... [2024-11-03 00:54:02,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fea8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:54:02, skipping insertion in model container [2024-11-03 00:54:02,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:54:01" (2/3) ... [2024-11-03 00:54:02,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fea8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:54:02, skipping insertion in model container [2024-11-03 00:54:02,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:54:02" (3/3) ... [2024-11-03 00:54:02,990 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-14.i [2024-11-03 00:54:03,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:54:03,002 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:54:03,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:54:03,060 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;@6aaf21bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:54:03,061 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:54:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-03 00:54:03,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-03 00:54:03,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:03,076 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 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, 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, 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, 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] [2024-11-03 00:54:03,076 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:03,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1318783381, now seen corresponding path program 1 times [2024-11-03 00:54:03,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:03,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471252834] [2024-11-03 00:54:03,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:03,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:03,096 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) [2024-11-03 00:54:03,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 00:54:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:03,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:54:03,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-03 00:54:03,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:03,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-03 00:54:03,791 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:03,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471252834] [2024-11-03 00:54:03,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [471252834] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:54:03,791 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:54:03,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:54:03,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315799473] [2024-11-03 00:54:03,793 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:03,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:54:03,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:54:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:54:03,813 INFO L87 Difference]: Start difference. First operand has 89 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 56 states have internal predecessors, (78), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 00:54:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:03,834 INFO L93 Difference]: Finished difference Result 170 states and 303 transitions. [2024-11-03 00:54:03,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:54:03,836 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) Word has length 196 [2024-11-03 00:54:03,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:03,841 INFO L225 Difference]: With dead ends: 170 [2024-11-03 00:54:03,841 INFO L226 Difference]: Without dead ends: 84 [2024-11-03 00:54:03,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:54:03,846 INFO L432 NwaCegarLoop]: 130 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, 130 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 [2024-11-03 00:54:03,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:54:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-03 00:54:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-03 00:54:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 51 states have internal predecessors, (68), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-03 00:54:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2024-11-03 00:54:03,879 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 196 [2024-11-03 00:54:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:03,879 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2024-11-03 00:54:03,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (31), 1 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-03 00:54:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2024-11-03 00:54:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-03 00:54:03,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:03,882 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 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, 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, 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, 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] [2024-11-03 00:54:03,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 00:54:04,082 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 [2024-11-03 00:54:04,083 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:04,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:04,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1504631469, now seen corresponding path program 1 times [2024-11-03 00:54:04,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:04,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889824892] [2024-11-03 00:54:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:04,084 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:04,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:04,086 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) [2024-11-03 00:54:04,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 00:54:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:04,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 00:54:04,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:05,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 00:54:05,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 00:54:06,764 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889824892] [2024-11-03 00:54:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889824892] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:54:06,765 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:54:06,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 00:54:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526194635] [2024-11-03 00:54:06,765 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:06,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 00:54:06,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:06,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 00:54:06,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 00:54:06,773 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 00:54:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:09,678 INFO L93 Difference]: Finished difference Result 282 states and 435 transitions. [2024-11-03 00:54:09,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 00:54:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 196 [2024-11-03 00:54:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:09,698 INFO L225 Difference]: With dead ends: 282 [2024-11-03 00:54:09,698 INFO L226 Difference]: Without dead ends: 201 [2024-11-03 00:54:09,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:54:09,700 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 252 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-03 00:54:09,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 420 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-03 00:54:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-03 00:54:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 163. [2024-11-03 00:54:09,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.336734693877551) internal successors, (131), 98 states have internal predecessors, (131), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-03 00:54:09,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 255 transitions. [2024-11-03 00:54:09,732 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 255 transitions. Word has length 196 [2024-11-03 00:54:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:09,733 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 255 transitions. [2024-11-03 00:54:09,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 00:54:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 255 transitions. [2024-11-03 00:54:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-03 00:54:09,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:09,739 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 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, 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, 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, 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] [2024-11-03 00:54:09,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 00:54:09,939 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 [2024-11-03 00:54:09,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:09,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash -184312273, now seen corresponding path program 1 times [2024-11-03 00:54:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:09,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408107364] [2024-11-03 00:54:09,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:09,941 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:09,957 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) [2024-11-03 00:54:09,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 00:54:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:10,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 00:54:10,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:54:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 00:54:11,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:54:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-03 00:54:11,967 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:54:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408107364] [2024-11-03 00:54:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [408107364] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:54:11,968 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:54:11,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 6 [2024-11-03 00:54:11,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374175917] [2024-11-03 00:54:11,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:54:11,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 00:54:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:54:11,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 00:54:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 00:54:11,970 INFO L87 Difference]: Start difference. First operand 163 states and 255 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 00:54:13,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:54:13,623 INFO L93 Difference]: Finished difference Result 404 states and 634 transitions. [2024-11-03 00:54:13,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 00:54:13,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 196 [2024-11-03 00:54:13,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:54:13,630 INFO L225 Difference]: With dead ends: 404 [2024-11-03 00:54:13,630 INFO L226 Difference]: Without dead ends: 244 [2024-11-03 00:54:13,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-03 00:54:13,632 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 70 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-03 00:54:13,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 477 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-03 00:54:13,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-03 00:54:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2024-11-03 00:54:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 145 states have internal predecessors, (193), 93 states have call successors, (93), 3 states have call predecessors, (93), 3 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2024-11-03 00:54:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 379 transitions. [2024-11-03 00:54:13,672 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 379 transitions. Word has length 196 [2024-11-03 00:54:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:54:13,673 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 379 transitions. [2024-11-03 00:54:13,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2024-11-03 00:54:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 379 transitions. [2024-11-03 00:54:13,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-03 00:54:13,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:54:13,678 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 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, 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, 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, 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] [2024-11-03 00:54:13,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 00:54:13,879 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 [2024-11-03 00:54:13,879 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:54:13,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:54:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1824677051, now seen corresponding path program 1 times [2024-11-03 00:54:13,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:54:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1781639898] [2024-11-03 00:54:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:54:13,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:54:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:54:13,887 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) [2024-11-03 00:54:13,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 00:54:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:54:15,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-03 00:54:15,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:55:18,445 WARN L286 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 83 DAG size of output: 84 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-03 00:55:43,983 WARN L286 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 89 DAG size of output: 88 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)