/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 23:05:58,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 23:05:58,330 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-02 23:05:58,336 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 23:05:58,336 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 23:05:58,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 23:05:58,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 23:05:58,361 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 23:05:58,361 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 23:05:58,362 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 23:05:58,362 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 23:05:58,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 23:05:58,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 23:05:58,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 23:05:58,363 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 23:05:58,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 23:05:58,364 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 23:05:58,365 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 23:05:58,365 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 23:05:58,365 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 23:05:58,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 23:05:58,366 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 23:05:58,367 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 23:05:58,367 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 23:05:58,367 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 23:05:58,367 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 23:05:58,368 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 23:05:58,368 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 23:05:58,369 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 23:05:58,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 23:05:58,369 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 23:05:58,369 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 23:05:58,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 23:05:58,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:05:58,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 23:05:58,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 23:05:58,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 23:05:58,560 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 23:05:58,561 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 23:05:58,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2024-11-02 23:05:59,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 23:06:00,116 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 23:06:00,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c [2024-11-02 23:06:00,124 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fedffa78/e5dfe241f79c4848b0e684382ccab12b/FLAG89a5fc35c [2024-11-02 23:06:00,520 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fedffa78/e5dfe241f79c4848b0e684382ccab12b [2024-11-02 23:06:00,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 23:06:00,523 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 23:06:00,524 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 23:06:00,524 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 23:06:00,529 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 23:06:00,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,530 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478a4795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00, skipping insertion in model container [2024-11-02 23:06:00,531 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,560 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 23:06:00,741 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c[3223,3236] [2024-11-02 23:06:00,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 23:06:00,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 23:06:00,777 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730c.c[3223,3236] [2024-11-02 23:06:00,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 23:06:00,794 INFO L204 MainTranslator]: Completed translation [2024-11-02 23:06:00,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00 WrapperNode [2024-11-02 23:06:00,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 23:06:00,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 23:06:00,799 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 23:06:00,799 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 23:06:00,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,823 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,853 INFO L138 Inliner]: procedures = 20, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 182 [2024-11-02 23:06:00,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 23:06:00,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 23:06:00,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 23:06:00,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 23:06:00,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,879 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,918 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 3, 2, 3]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 2, 1, 1]. [2024-11-02 23:06:00,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,919 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 23:06:00,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 23:06:00,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 23:06:00,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 23:06:00,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (1/1) ... [2024-11-02 23:06:00,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 23:06:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:01,019 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) [2024-11-02 23:06:01,025 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 [2024-11-02 23:06:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 23:06:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#0 [2024-11-02 23:06:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#1 [2024-11-02 23:06:01,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#2 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8#3 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#0 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#1 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#2 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8#3 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-02 23:06:01,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 23:06:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-02 23:06:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-02 23:06:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-02 23:06:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 23:06:01,145 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 23:06:01,151 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 23:06:03,418 INFO L? ?]: Removed 38 outVars from TransFormulas that were not future-live. [2024-11-02 23:06:03,418 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 23:06:03,429 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 23:06:03,430 INFO L316 CfgBuilder]: Removed 10 assume(true) statements. [2024-11-02 23:06:03,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:06:03 BoogieIcfgContainer [2024-11-02 23:06:03,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 23:06:03,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 23:06:03,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 23:06:03,434 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 23:06:03,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:06:00" (1/3) ... [2024-11-02 23:06:03,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37472538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:06:03, skipping insertion in model container [2024-11-02 23:06:03,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:06:00" (2/3) ... [2024-11-02 23:06:03,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37472538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:06:03, skipping insertion in model container [2024-11-02 23:06:03,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:06:03" (3/3) ... [2024-11-02 23:06:03,436 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2024-11-02 23:06:03,448 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 23:06:03,448 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 23:06:03,485 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 23:06:03,490 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;@5962183e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 23:06:03,490 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 23:06:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-02 23:06:03,498 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:03,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:03,499 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:03,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:03,503 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2024-11-02 23:06:03,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:03,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452064494] [2024-11-02 23:06:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:03,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:03,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:03,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 23:06:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:03,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 23:06:03,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:03,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:03,614 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:03,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452064494] [2024-11-02 23:06:03,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1452064494] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:03,614 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:03,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-02 23:06:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853516738] [2024-11-02 23:06:03,618 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:03,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 23:06:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:03,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 23:06:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 23:06:03,637 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:03,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:03,650 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2024-11-02 23:06:03,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 23:06:03,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-02 23:06:03,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:03,659 INFO L225 Difference]: With dead ends: 104 [2024-11-02 23:06:03,660 INFO L226 Difference]: Without dead ends: 50 [2024-11-02 23:06:03,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 23:06:03,666 INFO L432 NwaCegarLoop]: 73 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, 73 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 [2024-11-02 23:06:03,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 23:06:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-02 23:06:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-02 23:06:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-02 23:06:03,693 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2024-11-02 23:06:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:03,694 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-02 23:06:03,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-11-02 23:06:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 23:06:03,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:03,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:03,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-02 23:06:03,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:03,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:03,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2024-11-02 23:06:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918829152] [2024-11-02 23:06:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:03,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:03,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:03,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:03,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 23:06:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:04,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 23:06:04,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:04,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:04,754 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:04,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918829152] [2024-11-02 23:06:04,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [918829152] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:04,755 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:04,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-02 23:06:04,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123930914] [2024-11-02 23:06:04,755 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:04,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 23:06:04,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 23:06:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 23:06:04,758 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:06,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:06,442 INFO L93 Difference]: Finished difference Result 96 states and 133 transitions. [2024-11-02 23:06:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 23:06:06,443 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-02 23:06:06,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:06,444 INFO L225 Difference]: With dead ends: 96 [2024-11-02 23:06:06,444 INFO L226 Difference]: Without dead ends: 54 [2024-11-02 23:06:06,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-02 23:06:06,445 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 126 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:06,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 128 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-02 23:06:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-02 23:06:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2024-11-02 23:06:06,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:06,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2024-11-02 23:06:06,454 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2024-11-02 23:06:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:06,454 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2024-11-02 23:06:06,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2024-11-02 23:06:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-02 23:06:06,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:06,454 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:06,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 23:06:06,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:06,655 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:06,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2024-11-02 23:06:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:06,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239411561] [2024-11-02 23:06:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:06,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:06,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:06,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:06,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 23:06:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:06,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-02 23:06:06,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:07,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:07,038 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:07,372 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:07,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239411561] [2024-11-02 23:06:07,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [239411561] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:07,372 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:07,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2024-11-02 23:06:07,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868775721] [2024-11-02 23:06:07,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:07,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 23:06:07,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:07,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 23:06:07,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 23:06:07,374 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:07,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:07,908 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2024-11-02 23:06:07,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 23:06:07,909 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-02 23:06:07,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:07,910 INFO L225 Difference]: With dead ends: 56 [2024-11-02 23:06:07,910 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 23:06:07,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-02 23:06:07,911 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 102 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:07,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 192 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-02 23:06:07,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 23:06:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 23:06:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2024-11-02 23:06:07,916 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2024-11-02 23:06:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:07,916 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2024-11-02 23:06:07,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2024-11-02 23:06:07,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-02 23:06:07,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:07,916 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:07,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-02 23:06:08,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:08,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:08,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2024-11-02 23:06:08,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:08,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863108128] [2024-11-02 23:06:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:08,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:08,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:08,127 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:08,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-02 23:06:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:08,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 23:06:08,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:09,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:11,165 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863108128] [2024-11-02 23:06:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1863108128] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:11,165 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2024-11-02 23:06:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021518482] [2024-11-02 23:06:11,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:11,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-02 23:06:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:11,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-02 23:06:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-02 23:06:11,167 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:12,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:12,815 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-11-02 23:06:12,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 23:06:12,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-02 23:06:12,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:12,816 INFO L225 Difference]: With dead ends: 60 [2024-11-02 23:06:12,816 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 23:06:12,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-02 23:06:12,817 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 108 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:12,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 424 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-02 23:06:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 23:06:12,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 23:06:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2024-11-02 23:06:12,822 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2024-11-02 23:06:12,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:12,822 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2024-11-02 23:06:12,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2024-11-02 23:06:12,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-02 23:06:12,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:12,823 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:12,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-02 23:06:13,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:13,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:13,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2024-11-02 23:06:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:13,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495886075] [2024-11-02 23:06:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:13,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:13,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:13,031 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:13,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-02 23:06:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:13,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 23:06:13,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:13,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:13,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 23:06:13,249 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:13,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495886075] [2024-11-02 23:06:13,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [495886075] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:13,249 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:13,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 23:06:13,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628832252] [2024-11-02 23:06:13,249 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:13,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 23:06:13,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 23:06:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 23:06:13,252 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:13,575 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2024-11-02 23:06:13,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 23:06:13,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-02 23:06:13,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:13,577 INFO L225 Difference]: With dead ends: 84 [2024-11-02 23:06:13,577 INFO L226 Difference]: Without dead ends: 55 [2024-11-02 23:06:13,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 23:06:13,578 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 17 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:13,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 23:06:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-02 23:06:13,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-02 23:06:13,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:13,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-02 23:06:13,595 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 27 [2024-11-02 23:06:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:13,595 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-02 23:06:13,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-02 23:06:13,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-02 23:06:13,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:13,596 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:13,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-02 23:06:13,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:13,801 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:13,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:13,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1460519840, now seen corresponding path program 1 times [2024-11-02 23:06:13,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:13,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233763656] [2024-11-02 23:06:13,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:13,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:13,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-02 23:06:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:13,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 23:06:13,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 23:06:14,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 23:06:15,027 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233763656] [2024-11-02 23:06:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1233763656] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:15,028 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:15,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-02 23:06:15,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77413904] [2024-11-02 23:06:15,028 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:15,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 23:06:15,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 23:06:15,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 23:06:15,030 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:15,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:15,633 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2024-11-02 23:06:15,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 23:06:15,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-02 23:06:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:15,634 INFO L225 Difference]: With dead ends: 89 [2024-11-02 23:06:15,634 INFO L226 Difference]: Without dead ends: 68 [2024-11-02 23:06:15,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-02 23:06:15,635 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 80 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:15,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 135 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-02 23:06:15,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-02 23:06:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 63. [2024-11-02 23:06:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 83 transitions. [2024-11-02 23:06:15,642 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 83 transitions. Word has length 33 [2024-11-02 23:06:15,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:15,643 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 83 transitions. [2024-11-02 23:06:15,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 83 transitions. [2024-11-02 23:06:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-02 23:06:15,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:15,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:15,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-02 23:06:15,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:15,848 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:15,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1792841184, now seen corresponding path program 1 times [2024-11-02 23:06:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:15,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131871664] [2024-11-02 23:06:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:15,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:15,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:15,850 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:15,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-02 23:06:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:15,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 23:06:15,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 23:06:16,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-02 23:06:16,855 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131871664] [2024-11-02 23:06:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [131871664] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 23:06:16,855 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 23:06:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2024-11-02 23:06:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308689460] [2024-11-02 23:06:16,882 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 23:06:16,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 23:06:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 23:06:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-02 23:06:16,883 INFO L87 Difference]: Start difference. First operand 63 states and 83 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:17,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:17,834 INFO L93 Difference]: Finished difference Result 110 states and 147 transitions. [2024-11-02 23:06:17,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 23:06:17,835 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-02 23:06:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:17,836 INFO L225 Difference]: With dead ends: 110 [2024-11-02 23:06:17,836 INFO L226 Difference]: Without dead ends: 63 [2024-11-02 23:06:17,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-02 23:06:17,837 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 5 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:17,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 147 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 23:06:17,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-02 23:06:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-02 23:06:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:17,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2024-11-02 23:06:17,845 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 39 [2024-11-02 23:06:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:17,845 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2024-11-02 23:06:17,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2024-11-02 23:06:17,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-02 23:06:17,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:17,851 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:17,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-02 23:06:18,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:18,052 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:18,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1564040323, now seen corresponding path program 1 times [2024-11-02 23:06:18,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289396482] [2024-11-02 23:06:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:18,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:18,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:18,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:18,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-02 23:06:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:18,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 23:06:18,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:18,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:18,895 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:18,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289396482] [2024-11-02 23:06:18,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1289396482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:06:18,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:06:18,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-02 23:06:18,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138661611] [2024-11-02 23:06:18,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:06:18,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 23:06:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 23:06:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-02 23:06:18,897 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:19,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:19,666 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2024-11-02 23:06:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 23:06:19,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-02 23:06:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:19,667 INFO L225 Difference]: With dead ends: 112 [2024-11-02 23:06:19,667 INFO L226 Difference]: Without dead ends: 75 [2024-11-02 23:06:19,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-02 23:06:19,668 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 21 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:19,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 267 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-02 23:06:19,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-02 23:06:19,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-02 23:06:19,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2024-11-02 23:06:19,673 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 44 [2024-11-02 23:06:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:19,673 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2024-11-02 23:06:19,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2024-11-02 23:06:19,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-02 23:06:19,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:19,677 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:19,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-02 23:06:19,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:19,878 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:19,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 2 times [2024-11-02 23:06:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921233561] [2024-11-02 23:06:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:19,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:19,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:19,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:19,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-02 23:06:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:19,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-02 23:06:19,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:21,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:22,468 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:22,468 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:22,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921233561] [2024-11-02 23:06:22,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [921233561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:06:22,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:06:22,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-02 23:06:22,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183983351] [2024-11-02 23:06:22,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:06:22,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-02 23:06:22,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-02 23:06:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-02 23:06:22,470 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:24,388 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2024-11-02 23:06:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-02 23:06:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-02 23:06:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:24,390 INFO L225 Difference]: With dead ends: 136 [2024-11-02 23:06:24,390 INFO L226 Difference]: Without dead ends: 99 [2024-11-02 23:06:24,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2024-11-02 23:06:24,391 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 56 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:24,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 176 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-02 23:06:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-02 23:06:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-02 23:06:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 98 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2024-11-02 23:06:24,409 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2024-11-02 23:06:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:24,409 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2024-11-02 23:06:24,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2024-11-02 23:06:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-02 23:06:24,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:24,410 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:24,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-02 23:06:24,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:24,611 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:24,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:24,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 3 times [2024-11-02 23:06:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:24,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330621618] [2024-11-02 23:06:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:24,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:24,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:24,614 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:24,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-02 23:06:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:24,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-02 23:06:24,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:28,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-02 23:06:32,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330621618] [2024-11-02 23:06:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1330621618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:06:32,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:06:32,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-02 23:06:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216193764] [2024-11-02 23:06:32,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:06:32,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-02 23:06:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-02 23:06:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2024-11-02 23:06:32,531 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:38,331 INFO L93 Difference]: Finished difference Result 160 states and 220 transitions. [2024-11-02 23:06:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-02 23:06:38,331 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-02 23:06:38,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:38,333 INFO L225 Difference]: With dead ends: 160 [2024-11-02 23:06:38,333 INFO L226 Difference]: Without dead ends: 123 [2024-11-02 23:06:38,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2024-11-02 23:06:38,334 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 59 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:38,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 477 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-02 23:06:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-02 23:06:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2024-11-02 23:06:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 122 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2024-11-02 23:06:38,348 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 80 [2024-11-02 23:06:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:38,348 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2024-11-02 23:06:38,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.78125) internal successors, (121), 32 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2024-11-02 23:06:38,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-02 23:06:38,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:38,349 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:38,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-02 23:06:38,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:38,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:38,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:38,552 INFO L85 PathProgramCache]: Analyzing trace with hash -991533821, now seen corresponding path program 4 times [2024-11-02 23:06:38,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:38,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271554069] [2024-11-02 23:06:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:38,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:38,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:38,556 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:38,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-02 23:06:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:38,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 23:06:38,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:06:40,733 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:06:42,815 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:42,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271554069] [2024-11-02 23:06:42,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1271554069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:06:42,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:06:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-02 23:06:42,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11833978] [2024-11-02 23:06:42,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:06:42,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 23:06:42,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:42,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 23:06:42,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-02 23:06:42,817 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:45,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 23:06:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:45,754 INFO L93 Difference]: Finished difference Result 177 states and 238 transitions. [2024-11-02 23:06:45,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 23:06:45,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-02 23:06:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:45,756 INFO L225 Difference]: With dead ends: 177 [2024-11-02 23:06:45,756 INFO L226 Difference]: Without dead ends: 156 [2024-11-02 23:06:45,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2024-11-02 23:06:45,756 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 165 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:45,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 265 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-02 23:06:45,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-02 23:06:45,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 151. [2024-11-02 23:06:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 150 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:45,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2024-11-02 23:06:45,763 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 104 [2024-11-02 23:06:45,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:45,763 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2024-11-02 23:06:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2024-11-02 23:06:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-02 23:06:45,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:45,764 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:45,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-02 23:06:45,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:45,964 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:45,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -90385021, now seen corresponding path program 5 times [2024-11-02 23:06:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:45,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279906382] [2024-11-02 23:06:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:45,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:45,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:45,967 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:45,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-02 23:06:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:46,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 23:06:46,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:06:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:06:48,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:06:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:06:51,903 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:06:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279906382] [2024-11-02 23:06:51,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1279906382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:06:51,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:06:51,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-02 23:06:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526008337] [2024-11-02 23:06:51,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:06:51,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-02 23:06:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:06:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-02 23:06:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2024-11-02 23:06:51,905 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:06:57,624 INFO L93 Difference]: Finished difference Result 233 states and 322 transitions. [2024-11-02 23:06:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-02 23:06:57,625 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-11-02 23:06:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:06:57,627 INFO L225 Difference]: With dead ends: 233 [2024-11-02 23:06:57,627 INFO L226 Difference]: Without dead ends: 212 [2024-11-02 23:06:57,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-02 23:06:57,628 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 413 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-02 23:06:57,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 587 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-02 23:06:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-02 23:06:57,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2024-11-02 23:06:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3689320388349515) internal successors, (282), 206 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 282 transitions. [2024-11-02 23:06:57,647 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 282 transitions. Word has length 116 [2024-11-02 23:06:57,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:06:57,648 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 282 transitions. [2024-11-02 23:06:57,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.222222222222222) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:06:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 282 transitions. [2024-11-02 23:06:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-02 23:06:57,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:06:57,649 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:06:57,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-02 23:06:57,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:57,849 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:06:57,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:06:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash 289109635, now seen corresponding path program 6 times [2024-11-02 23:06:57,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:06:57,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433976270] [2024-11-02 23:06:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:06:57,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:06:57,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:06:57,851 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:06:57,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-02 23:06:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:06:58,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-02 23:06:58,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:07:03,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:07:03,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 23:07:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1003 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:07:09,673 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 23:07:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433976270] [2024-11-02 23:07:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1433976270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 23:07:09,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 23:07:09,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2024-11-02 23:07:09,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23716756] [2024-11-02 23:07:09,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 23:07:09,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-02 23:07:09,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 23:07:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-02 23:07:09,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2024-11-02 23:07:09,676 INFO L87 Difference]: Start difference. First operand 207 states and 282 transitions. Second operand has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:07:32,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 23:07:32,500 INFO L93 Difference]: Finished difference Result 345 states and 490 transitions. [2024-11-02 23:07:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-02 23:07:32,501 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-02 23:07:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 23:07:32,503 INFO L225 Difference]: With dead ends: 345 [2024-11-02 23:07:32,503 INFO L226 Difference]: Without dead ends: 324 [2024-11-02 23:07:32,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=1206, Invalid=2826, Unknown=0, NotChecked=0, Total=4032 [2024-11-02 23:07:32,506 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 1221 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2024-11-02 23:07:32,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1306 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2024-11-02 23:07:32,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-02 23:07:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2024-11-02 23:07:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.389937106918239) internal successors, (442), 318 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:07:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 442 transitions. [2024-11-02 23:07:32,520 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 442 transitions. Word has length 140 [2024-11-02 23:07:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 23:07:32,521 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 442 transitions. [2024-11-02 23:07:32,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.176470588235294) internal successors, (142), 34 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 23:07:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 442 transitions. [2024-11-02 23:07:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-02 23:07:32,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 23:07:32,523 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 23:07:32,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-02 23:07:32,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:07:32,728 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 23:07:32,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 23:07:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1161840509, now seen corresponding path program 7 times [2024-11-02 23:07:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 23:07:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546017670] [2024-11-02 23:07:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 23:07:32,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 23:07:32,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 23:07:32,730 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 23:07:32,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-02 23:07:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 23:07:32,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-02 23:07:32,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 23:07:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2051 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2024-11-02 23:07:45,834 INFO L311 TraceCheckSpWp]: Computing backward predicates...