/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/hardness-nfm22/hardness_operatoramount_amount100_file-82.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:41:54,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:41:54,069 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 21:41:54,072 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:41:54,072 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:41:54,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:41:54,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:41:54,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:41:54,087 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:41:54,087 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:41:54,087 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:41:54,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:41:54,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:41:54,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:41:54,088 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:41:54,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:41:54,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:41:54,089 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:41:54,089 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:41:54,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:41:54,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:41:54,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:41:54,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:41:54,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:41:54,091 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:41:54,091 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:41:54,091 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:41:54,092 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:41:54,092 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:41:54,092 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:41:54,092 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:41:54,093 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:41:54,093 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:41:54,093 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:41:54,093 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:41:54,094 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:41:54,094 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:41:54,094 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:41:54,094 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:41:54,095 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:41:54,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:41:54,099 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:41:54,099 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:41:54,099 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:41:54,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:41:54,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:41:54,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:41:54,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:41:54,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:41:54,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:41:54,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i [2024-11-02 21:41:55,725 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:41:55,938 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:41:55,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i [2024-11-02 21:41:55,945 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4510070/863b59f3b2444179acbfe6ea6514c457/FLAG64d894d6e [2024-11-02 21:41:56,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c4510070/863b59f3b2444179acbfe6ea6514c457 [2024-11-02 21:41:56,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:41:56,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:41:56,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:41:56,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:41:56,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:41:56,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606ce71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56, skipping insertion in model container [2024-11-02 21:41:56,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:41:56,471 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i[916,929] [2024-11-02 21:41:56,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:41:56,556 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:41:56,566 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount100_file-82.i[916,929] [2024-11-02 21:41:56,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:41:56,614 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:41:56,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56 WrapperNode [2024-11-02 21:41:56,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:41:56,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:41:56,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:41:56,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:41:56,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,650 INFO L138 Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2024-11-02 21:41:56,651 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:41:56,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:41:56,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:41:56,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:41:56,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,670 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,683 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-02 21:41:56,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,693 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:41:56,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:41:56,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:41:56,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:41:56,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (1/1) ... [2024-11-02 21:41:56,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:41:56,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:41:56,755 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 21:41:56,762 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 21:41:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:41:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:41:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:41:56,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:41:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:41:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:41:56,882 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:41:56,884 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:42:03,163 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-02 21:42:03,164 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:42:03,175 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:42:03,175 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:42:03,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:42:03 BoogieIcfgContainer [2024-11-02 21:42:03,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:42:03,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:42:03,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:42:03,179 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:42:03,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:41:56" (1/3) ... [2024-11-02 21:42:03,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb785c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:42:03, skipping insertion in model container [2024-11-02 21:42:03,179 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:41:56" (2/3) ... [2024-11-02 21:42:03,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@abb785c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:42:03, skipping insertion in model container [2024-11-02 21:42:03,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:42:03" (3/3) ... [2024-11-02 21:42:03,181 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-82.i [2024-11-02 21:42:03,191 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:42:03,191 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:42:03,237 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:42:03,241 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;@25fa0840, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:42:03,241 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:42:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 60 states have internal predecessors, (82), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-02 21:42:03,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-02 21:42:03,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:42:03,256 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:42:03,256 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:42:03,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:42:03,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1826903065, now seen corresponding path program 1 times [2024-11-02 21:42:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:42:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933931418] [2024-11-02 21:42:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:42:03,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:42:03,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:42:03,270 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 21:42:03,271 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 21:42:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:42:03,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:42:03,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:42:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-02 21:42:03,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:42:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2024-11-02 21:42:04,794 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:42:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933931418] [2024-11-02 21:42:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [933931418] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:42:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:42:04,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:42:04,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922552192] [2024-11-02 21:42:04,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:42:04,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:42:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:42:04,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:42:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:42:04,840 INFO L87 Difference]: Start difference. First operand has 93 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 60 states have internal predecessors, (82), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:42:04,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:42:04,870 INFO L93 Difference]: Finished difference Result 179 states and 313 transitions. [2024-11-02 21:42:04,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:42:04,872 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) Word has length 202 [2024-11-02 21:42:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:42:04,879 INFO L225 Difference]: With dead ends: 179 [2024-11-02 21:42:04,879 INFO L226 Difference]: Without dead ends: 89 [2024-11-02 21:42:04,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 402 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 21:42:04,885 INFO L432 NwaCegarLoop]: 137 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, 137 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 21:42:04,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:42:04,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-02 21:42:04,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-02 21:42:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-02 21:42:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 137 transitions. [2024-11-02 21:42:04,921 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 137 transitions. Word has length 202 [2024-11-02 21:42:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:42:04,922 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 137 transitions. [2024-11-02 21:42:04,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:42:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 137 transitions. [2024-11-02 21:42:04,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-02 21:42:04,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:42:04,930 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:42:04,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 21:42:05,130 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 21:42:05,131 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:42:05,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:42:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -550393749, now seen corresponding path program 1 times [2024-11-02 21:42:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:42:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944565360] [2024-11-02 21:42:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:42:05,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:42:05,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:42:05,134 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 21:42:05,135 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 21:42:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:42:05,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:42:05,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:42:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:42:05,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:42:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:42:06,550 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:42:06,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944565360] [2024-11-02 21:42:06,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [944565360] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:42:06,551 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:42:06,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-02 21:42:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964671183] [2024-11-02 21:42:06,551 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:42:06,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 21:42:06,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:42:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 21:42:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:42:06,554 INFO L87 Difference]: Start difference. First operand 89 states and 137 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:42:10,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:14,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:42:15,218 INFO L93 Difference]: Finished difference Result 259 states and 401 transitions. [2024-11-02 21:42:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:42:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 202 [2024-11-02 21:42:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:42:15,223 INFO L225 Difference]: With dead ends: 259 [2024-11-02 21:42:15,223 INFO L226 Difference]: Without dead ends: 173 [2024-11-02 21:42:15,224 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 21:42:15,229 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 124 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-02 21:42:15,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 358 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2024-11-02 21:42:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-02 21:42:15,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2024-11-02 21:42:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.320754716981132) internal successors, (140), 106 states have internal predecessors, (140), 62 states have call successors, (62), 2 states have call predecessors, (62), 2 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-02 21:42:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 264 transitions. [2024-11-02 21:42:15,272 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 264 transitions. Word has length 202 [2024-11-02 21:42:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:42:15,273 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 264 transitions. [2024-11-02 21:42:15,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:42:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 264 transitions. [2024-11-02 21:42:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-02 21:42:15,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:42:15,280 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:42:15,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-02 21:42:15,480 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 21:42:15,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:42:15,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:42:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1713619070, now seen corresponding path program 1 times [2024-11-02 21:42:15,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:42:15,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475307902] [2024-11-02 21:42:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:42:15,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:42:15,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:42:15,483 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 21:42:15,485 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 21:42:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:42:15,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-02 21:42:15,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:42:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:42:16,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:42:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-11-02 21:42:17,580 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:42:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475307902] [2024-11-02 21:42:17,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1475307902] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:42:17,581 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:42:17,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2024-11-02 21:42:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104729081] [2024-11-02 21:42:17,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:42:17,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 21:42:17,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:42:17,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 21:42:17,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:42:17,585 INFO L87 Difference]: Start difference. First operand 171 states and 264 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:42:22,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:26,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:30,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:35,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:39,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:43,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:42:43,794 INFO L93 Difference]: Finished difference Result 408 states and 627 transitions. [2024-11-02 21:42:43,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 21:42:43,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 203 [2024-11-02 21:42:43,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:42:43,869 INFO L225 Difference]: With dead ends: 408 [2024-11-02 21:42:43,869 INFO L226 Difference]: Without dead ends: 240 [2024-11-02 21:42:43,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-02 21:42:43,876 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 381 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 172 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2024-11-02 21:42:43,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 312 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 67 Invalid, 6 Unknown, 0 Unchecked, 26.1s Time] [2024-11-02 21:42:43,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-02 21:42:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2024-11-02 21:42:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 148 states have (on average 1.3108108108108107) internal successors, (194), 149 states have internal predecessors, (194), 83 states have call successors, (83), 3 states have call predecessors, (83), 3 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-02 21:42:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 360 transitions. [2024-11-02 21:42:43,923 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 360 transitions. Word has length 203 [2024-11-02 21:42:43,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:42:43,924 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 360 transitions. [2024-11-02 21:42:43,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) [2024-11-02 21:42:43,924 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 360 transitions. [2024-11-02 21:42:43,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-02 21:42:43,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:42:43,929 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:42:43,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-02 21:42:44,130 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 21:42:44,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:42:44,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:42:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1262533977, now seen corresponding path program 1 times [2024-11-02 21:42:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:42:44,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130172176] [2024-11-02 21:42:44,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:42:44,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:42:44,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:42:44,133 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 21:42:44,133 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 21:42:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:42:44,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 21:42:44,540 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:42:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 828 proven. 27 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2024-11-02 21:42:45,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:42:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-02 21:42:47,882 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:42:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130172176] [2024-11-02 21:42:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2130172176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:42:47,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:42:47,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2024-11-02 21:42:47,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799756183] [2024-11-02 21:42:47,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:42:47,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 21:42:47,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:42:47,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 21:42:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 21:42:47,884 INFO L87 Difference]: Start difference. First operand 235 states and 360 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-02 21:42:53,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:42:58,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:02,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:43:02,039 INFO L93 Difference]: Finished difference Result 481 states and 729 transitions. [2024-11-02 21:43:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-02 21:43:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 203 [2024-11-02 21:43:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:43:02,123 INFO L225 Difference]: With dead ends: 481 [2024-11-02 21:43:02,126 INFO L226 Difference]: Without dead ends: 249 [2024-11-02 21:43:02,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-02 21:43:02,128 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 136 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 48 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-02 21:43:02,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 230 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 168 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2024-11-02 21:43:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-02 21:43:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2024-11-02 21:43:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 154 states have (on average 1.2792207792207793) internal successors, (197), 155 states have internal predecessors, (197), 83 states have call successors, (83), 5 states have call predecessors, (83), 5 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2024-11-02 21:43:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 363 transitions. [2024-11-02 21:43:02,150 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 363 transitions. Word has length 203 [2024-11-02 21:43:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:43:02,150 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 363 transitions. [2024-11-02 21:43:02,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-02 21:43:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 363 transitions. [2024-11-02 21:43:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-02 21:43:02,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:43:02,152 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 21:43:02,198 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 21:43:02,353 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 21:43:02,353 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:43:02,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:43:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash -587203520, now seen corresponding path program 1 times [2024-11-02 21:43:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:43:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355247120] [2024-11-02 21:43:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:43:02,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:43:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:43:02,356 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 21:43:02,357 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 21:43:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:43:02,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-02 21:43:02,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:43:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 1653 trivial. 0 not checked. [2024-11-02 21:43:05,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:43:07,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-02 21:43:07,897 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:43:07,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355247120] [2024-11-02 21:43:07,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [355247120] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:43:07,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:43:07,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 16 [2024-11-02 21:43:07,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125794187] [2024-11-02 21:43:07,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:43:07,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 21:43:07,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:43:07,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 21:43:07,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-02 21:43:07,899 INFO L87 Difference]: Start difference. First operand 243 states and 363 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2024-11-02 21:43:19,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:23,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:27,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:31,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:35,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:39,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:43:43,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []