/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_amount250_file-4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-02 21:52:59,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 21:52:59,890 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 21:52:59,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 21:52:59,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 21:52:59,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 21:52:59,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 21:52:59,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 21:52:59,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-02 21:52:59,926 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-02 21:52:59,927 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 21:52:59,927 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 21:52:59,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 21:52:59,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 21:52:59,928 INFO L153 SettingsManager]: * Use SBE=true [2024-11-02 21:52:59,929 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 21:52:59,929 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 21:52:59,929 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 21:52:59,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 21:52:59,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 21:52:59,932 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 21:52:59,934 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 21:52:59,934 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 21:52:59,934 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 21:52:59,935 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 21:52:59,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 21:52:59,935 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 21:52:59,935 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 21:52:59,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 21:52:59,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 21:52:59,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 21:52:59,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 21:52:59,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 21:52:59,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 21:52:59,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:52:59,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 21:52:59,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 21:52:59,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 21:52:59,940 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-02 21:52:59,941 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 21:52:59,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 21:52:59,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-02 21:52:59,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-02 21:52:59,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 21:52:59,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:53:00,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 21:53:00,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 21:53:00,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 21:53:00,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 21:53:00,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 21:53:00,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-4.i [2024-11-02 21:53:01,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 21:53:01,911 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 21:53:01,912 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-4.i [2024-11-02 21:53:01,931 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/551e3f0ac/9ea971c3e843498fa73362a4aff02b18/FLAGfd68dbf2f [2024-11-02 21:53:01,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/551e3f0ac/9ea971c3e843498fa73362a4aff02b18 [2024-11-02 21:53:01,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 21:53:01,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-02 21:53:01,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 21:53:01,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 21:53:01,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 21:53:01,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:53:01" (1/1) ... [2024-11-02 21:53:01,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557c2e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:01, skipping insertion in model container [2024-11-02 21:53:01,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:53:01" (1/1) ... [2024-11-02 21:53:02,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 21:53:02,189 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_amount250_file-4.i[915,928] [2024-11-02 21:53:02,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:53:02,338 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 21:53:02,349 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_amount250_file-4.i[915,928] [2024-11-02 21:53:02,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 21:53:02,472 INFO L204 MainTranslator]: Completed translation [2024-11-02 21:53:02,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02 WrapperNode [2024-11-02 21:53:02,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 21:53:02,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 21:53:02,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 21:53:02,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 21:53:02,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,538 INFO L138 Inliner]: procedures = 27, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 348 [2024-11-02 21:53:02,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 21:53:02,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 21:53:02,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 21:53:02,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 21:53:02,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,554 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,576 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 21:53:02,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,598 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 21:53:02,613 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 21:53:02,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 21:53:02,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 21:53:02,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (1/1) ... [2024-11-02 21:53:02,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-02 21:53:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:53:02,656 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 21:53:02,659 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 21:53:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 21:53:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-02 21:53:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 21:53:02,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 21:53:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 21:53:02,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 21:53:02,794 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 21:53:02,796 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 21:53:12,460 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-02 21:53:12,460 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 21:53:12,473 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 21:53:12,474 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 21:53:12,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:53:12 BoogieIcfgContainer [2024-11-02 21:53:12,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 21:53:12,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 21:53:12,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 21:53:12,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 21:53:12,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:53:01" (1/3) ... [2024-11-02 21:53:12,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f429fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:53:12, skipping insertion in model container [2024-11-02 21:53:12,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:53:02" (2/3) ... [2024-11-02 21:53:12,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f429fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:53:12, skipping insertion in model container [2024-11-02 21:53:12,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:53:12" (3/3) ... [2024-11-02 21:53:12,482 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-4.i [2024-11-02 21:53:12,497 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 21:53:12,498 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 21:53:12,555 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 21:53:12,561 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;@5c7faa86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 21:53:12,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 21:53:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 98 states have internal predecessors, (142), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 21:53:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-02 21:53:12,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:53:12,590 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:12,590 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:53:12,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:53:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1204815028, now seen corresponding path program 1 times [2024-11-02 21:53:12,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:53:12,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534501757] [2024-11-02 21:53:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:53:12,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:53:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:53:12,611 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 21:53:12,613 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 21:53:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:53:13,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 21:53:13,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:53:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-02 21:53:13,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:53:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-02 21:53:15,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:53:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534501757] [2024-11-02 21:53:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [534501757] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-02 21:53:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 21:53:15,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-02 21:53:15,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027113693] [2024-11-02 21:53:15,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 21:53:15,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 21:53:15,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:53:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 21:53:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 21:53:15,111 INFO L87 Difference]: Start difference. First operand has 147 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 98 states have internal predecessors, (142), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-02 21:53:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:53:15,157 INFO L93 Difference]: Finished difference Result 287 states and 513 transitions. [2024-11-02 21:53:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 21:53:15,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) Word has length 309 [2024-11-02 21:53:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:53:15,167 INFO L225 Difference]: With dead ends: 287 [2024-11-02 21:53:15,167 INFO L226 Difference]: Without dead ends: 143 [2024-11-02 21:53:15,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 616 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 21:53:15,175 INFO L432 NwaCegarLoop]: 228 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, 228 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 21:53:15,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 21:53:15,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-02 21:53:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-02 21:53:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 94 states have (on average 1.425531914893617) internal successors, (134), 94 states have internal predecessors, (134), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 21:53:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 228 transitions. [2024-11-02 21:53:15,230 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 228 transitions. Word has length 309 [2024-11-02 21:53:15,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:53:15,231 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 228 transitions. [2024-11-02 21:53:15,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.5) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 2 states have call successors, (47) [2024-11-02 21:53:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 228 transitions. [2024-11-02 21:53:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-02 21:53:15,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:53:15,238 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:15,296 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 21:53:15,438 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 21:53:15,439 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:53:15,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:53:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash 377180634, now seen corresponding path program 1 times [2024-11-02 21:53:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:53:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537990983] [2024-11-02 21:53:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:53:15,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:53:15,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:53:15,444 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 21:53:15,446 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 21:53:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:53:16,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-02 21:53:16,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:53:16,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-02 21:53:16,168 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:53:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-02 21:53:18,037 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:53:18,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537990983] [2024-11-02 21:53:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1537990983] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-02 21:53:18,037 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-02 21:53:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-02 21:53:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369942787] [2024-11-02 21:53:18,038 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-02 21:53:18,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 21:53:18,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:53:18,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 21:53:18,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-02 21:53:18,042 INFO L87 Difference]: Start difference. First operand 143 states and 228 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-02 21:53:22,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:53:26,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-02 21:53:30,868 WARN L539 Checker$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 [1] [2024-11-02 21:53:31,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:53:31,055 INFO L93 Difference]: Finished difference Result 422 states and 676 transitions. [2024-11-02 21:53:31,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 21:53:31,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 309 [2024-11-02 21:53:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:53:31,064 INFO L225 Difference]: With dead ends: 422 [2024-11-02 21:53:31,064 INFO L226 Difference]: Without dead ends: 282 [2024-11-02 21:53:31,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 614 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 21:53:31,072 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 222 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-11-02 21:53:31,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 643 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2024-11-02 21:53:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-02 21:53:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 143. [2024-11-02 21:53:31,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 21:53:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 227 transitions. [2024-11-02 21:53:31,117 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 227 transitions. Word has length 309 [2024-11-02 21:53:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:53:31,119 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 227 transitions. [2024-11-02 21:53:31,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-02 21:53:31,121 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 227 transitions. [2024-11-02 21:53:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-02 21:53:31,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:53:31,134 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:53:31,221 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 21:53:31,334 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 21:53:31,335 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:53:31,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:53:31,336 INFO L85 PathProgramCache]: Analyzing trace with hash -209625380, now seen corresponding path program 1 times [2024-11-02 21:53:31,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:53:31,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921220134] [2024-11-02 21:53:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:53:31,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:53:31,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:53:31,341 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 21:53:31,346 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 21:53:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:53:31,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-02 21:53:31,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:53:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 1018 proven. 120 refuted. 0 times theorem prover too weak. 3186 trivial. 0 not checked. [2024-11-02 21:53:37,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:53:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 18 proven. 120 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-02 21:53:41,894 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:53:41,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921220134] [2024-11-02 21:53:41,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [921220134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:53:41,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:53:41,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-02 21:53:41,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947511564] [2024-11-02 21:53:41,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:53:41,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-02 21:53:41,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:53:41,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-02 21:53:41,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-02 21:53:41,899 INFO L87 Difference]: Start difference. First operand 143 states and 227 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2024-11-02 21:53:50,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:53:54,180 WARN L539 Checker$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 21:53:58,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-02 21:54:02,196 WARN L539 Checker$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 21:54:06,204 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 21:54:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 21:54:06,210 INFO L93 Difference]: Finished difference Result 289 states and 456 transitions. [2024-11-02 21:54:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-02 21:54:06,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) Word has length 309 [2024-11-02 21:54:06,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 21:54:06,294 INFO L225 Difference]: With dead ends: 289 [2024-11-02 21:54:06,294 INFO L226 Difference]: Without dead ends: 149 [2024-11-02 21:54:06,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 608 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-02 21:54:06,296 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 195 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 19 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2024-11-02 21:54:06,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 565 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 332 Invalid, 5 Unknown, 0 Unchecked, 23.9s Time] [2024-11-02 21:54:06,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-02 21:54:06,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2024-11-02 21:54:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 97 states have internal predecessors, (134), 47 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-02 21:54:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 228 transitions. [2024-11-02 21:54:06,322 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 228 transitions. Word has length 309 [2024-11-02 21:54:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 21:54:06,323 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 228 transitions. [2024-11-02 21:54:06,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 10 states have internal predecessors, (120), 3 states have call successors, (87), 2 states have call predecessors, (87), 4 states have return successors, (88), 3 states have call predecessors, (88), 3 states have call successors, (88) [2024-11-02 21:54:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 228 transitions. [2024-11-02 21:54:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-02 21:54:06,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 21:54:06,329 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:06,386 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 21:54:06,530 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 21:54:06,531 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 21:54:06,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 21:54:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash -282011938, now seen corresponding path program 1 times [2024-11-02 21:54:06,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-02 21:54:06,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164131050] [2024-11-02 21:54:06,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 21:54:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 21:54:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-02 21:54:06,534 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 21:54:06,535 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 21:54:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 21:54:07,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-02 21:54:07,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 21:54:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 46 proven. 138 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-11-02 21:54:12,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 21:54:20,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-02 21:54:20,380 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-02 21:54:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164131050] [2024-11-02 21:54:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [164131050] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 21:54:20,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-02 21:54:20,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2024-11-02 21:54:20,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164869888] [2024-11-02 21:54:20,381 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-02 21:54:20,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-02 21:54:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-02 21:54:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-02 21:54:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-02 21:54:20,383 INFO L87 Difference]: Start difference. First operand 147 states and 228 transitions. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 3 states have call successors, (93), 2 states have call predecessors, (93), 4 states have return successors, (94), 2 states have call predecessors, (94), 3 states have call successors, (94) [2024-11-02 21:54:30,696 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 21:54:34,702 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 [1]