/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 16:13:48,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 16:13:48,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-16 16:13:48,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 16:13:48,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 16:13:48,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 16:13:48,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 16:13:48,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 16:13:48,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 16:13:48,463 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 16:13:48,463 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 16:13:48,463 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 16:13:48,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 16:13:48,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 16:13:48,469 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 16:13:48,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 16:13:48,470 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 16:13:48,471 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 16:13:48,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 16:13:48,471 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 16:13:48,471 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 16:13:48,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 16:13:48,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 16:13:48,481 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 16:13:48,482 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 16:13:48,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 16:13:48,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 16:13:48,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 16:13:48,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 16:13:48,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:13:48,483 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 16:13:48,484 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 16:13:48,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 16:13:48,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 16:13:48,485 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-16 16:13:48,485 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-16 16:13:48,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 16:13:48,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 16:13:48,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 16:13:48,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 16:13:48,634 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 16:13:48,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2023-12-16 16:13:49,741 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 16:13:49,988 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 16:13:49,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2023-12-16 16:13:49,998 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad526f16/9d10d88589354d55b67aba04365faddb/FLAG2e6847c9d [2023-12-16 16:13:50,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ad526f16/9d10d88589354d55b67aba04365faddb [2023-12-16 16:13:50,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 16:13:50,014 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 16:13:50,017 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 16:13:50,017 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 16:13:50,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 16:13:50,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c09583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50, skipping insertion in model container [2023-12-16 16:13:50,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,063 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 16:13:50,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2023-12-16 16:13:50,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:13:50,323 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 16:13:50,369 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i[23375,23388] [2023-12-16 16:13:50,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 16:13:50,390 INFO L206 MainTranslator]: Completed translation [2023-12-16 16:13:50,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50 WrapperNode [2023-12-16 16:13:50,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 16:13:50,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 16:13:50,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 16:13:50,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 16:13:50,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,438 INFO L138 Inliner]: procedures = 127, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2023-12-16 16:13:50,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 16:13:50,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 16:13:50,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 16:13:50,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 16:13:50,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,459 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2023-12-16 16:13:50,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,469 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,470 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,473 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 16:13:50,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 16:13:50,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 16:13:50,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 16:13:50,474 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (1/1) ... [2023-12-16 16:13:50,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 16:13:50,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 16:13:50,510 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) [2023-12-16 16:13:50,534 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-12-16 16:13:50,535 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-12-16 16:13:50,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-12-16 16:13:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-16 16:13:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-16 16:13:50,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 16:13:50,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 16:13:50,528 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 [2023-12-16 16:13:50,615 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 16:13:50,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 16:13:50,638 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-12-16 16:13:50,768 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 16:13:50,789 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 16:13:50,789 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-16 16:13:50,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:13:50 BoogieIcfgContainer [2023-12-16 16:13:50,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 16:13:50,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 16:13:50,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 16:13:50,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 16:13:50,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:13:50" (1/3) ... [2023-12-16 16:13:50,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c1a453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:13:50, skipping insertion in model container [2023-12-16 16:13:50,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:13:50" (2/3) ... [2023-12-16 16:13:50,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c1a453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:13:50, skipping insertion in model container [2023-12-16 16:13:50,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:13:50" (3/3) ... [2023-12-16 16:13:50,800 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2023-12-16 16:13:50,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 16:13:50,816 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 16:13:50,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 16:13:50,871 INFO L357 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, mHoare=true, 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;@46852f78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 16:13:50,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 16:13:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:50,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 16:13:50,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:50,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:50,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:50,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash -111407645, now seen corresponding path program 1 times [2023-12-16 16:13:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:50,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869274725] [2023-12-16 16:13:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:50,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:50,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:50,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-16 16:13:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:13:50,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-16 16:13:51,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:13:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:13:51,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:13:51,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:13:51,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869274725] [2023-12-16 16:13:51,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869274725] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:13:51,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:13:51,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 16:13:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829521151] [2023-12-16 16:13:51,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:13:51,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 16:13:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:13:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 16:13:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:13:51,066 INFO L87 Difference]: Start difference. First operand has 25 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:13:51,086 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-12-16 16:13:51,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 16:13:51,089 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-16 16:13:51,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:13:51,094 INFO L225 Difference]: With dead ends: 37 [2023-12-16 16:13:51,094 INFO L226 Difference]: Without dead ends: 19 [2023-12-16 16:13:51,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 16:13:51,101 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:13:51,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:13:51,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-16 16:13:51,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-16 16:13:51,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-12-16 16:13:51,123 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 10 [2023-12-16 16:13:51,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:13:51,123 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-12-16 16:13:51,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,123 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-12-16 16:13:51,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-16 16:13:51,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:51,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:51,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-16 16:13:51,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:51,326 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:51,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:51,327 INFO L85 PathProgramCache]: Analyzing trace with hash 34120441, now seen corresponding path program 1 times [2023-12-16 16:13:51,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:51,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870257195] [2023-12-16 16:13:51,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:51,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:51,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:51,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:51,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-16 16:13:51,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:13:51,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:13:51,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:13:51,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 16:13:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:13:51,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:13:51,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:13:51,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870257195] [2023-12-16 16:13:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870257195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:13:51,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:13:51,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:13:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294406629] [2023-12-16 16:13:51,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:13:51,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:13:51,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:13:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:13:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:13:51,527 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:13:51,643 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2023-12-16 16:13:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:13:51,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-16 16:13:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:13:51,644 INFO L225 Difference]: With dead ends: 43 [2023-12-16 16:13:51,644 INFO L226 Difference]: Without dead ends: 39 [2023-12-16 16:13:51,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:13:51,645 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:13:51,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 53 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:13:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-16 16:13:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2023-12-16 16:13:51,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2023-12-16 16:13:51,650 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 12 [2023-12-16 16:13:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:13:51,650 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2023-12-16 16:13:51,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2023-12-16 16:13:51,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 16:13:51,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:51,650 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:51,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-16 16:13:51,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:51,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:51,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1521318348, now seen corresponding path program 1 times [2023-12-16 16:13:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602243130] [2023-12-16 16:13:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:51,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:51,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:51,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:51,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-16 16:13:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:13:51,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:13:51,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:13:51,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 16:13:51,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:13:51,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:13:51,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:13:51,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602243130] [2023-12-16 16:13:51,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602243130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:13:51,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:13:51,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:13:51,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509910418] [2023-12-16 16:13:51,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:13:51,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:13:51,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:13:51,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:13:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:13:51,988 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:13:52,103 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2023-12-16 16:13:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:13:52,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 16:13:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:13:52,104 INFO L225 Difference]: With dead ends: 45 [2023-12-16 16:13:52,104 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 16:13:52,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:13:52,105 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:13:52,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 57 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:13:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 16:13:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2023-12-16 16:13:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-12-16 16:13:52,109 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 14 [2023-12-16 16:13:52,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:13:52,109 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-12-16 16:13:52,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-12-16 16:13:52,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 16:13:52,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:52,110 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:52,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-16 16:13:52,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:52,316 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:52,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1529907427, now seen corresponding path program 1 times [2023-12-16 16:13:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665626897] [2023-12-16 16:13:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:52,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:52,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:52,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:52,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-16 16:13:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:13:52,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 16:13:52,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:13:52,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-16 16:13:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:13:52,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:13:52,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:13:52,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665626897] [2023-12-16 16:13:52,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665626897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:13:52,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:13:52,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 16:13:52,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309339036] [2023-12-16 16:13:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:13:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 16:13:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:13:52,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 16:13:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 16:13:52,419 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:13:52,509 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2023-12-16 16:13:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 16:13:52,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-16 16:13:52,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:13:52,510 INFO L225 Difference]: With dead ends: 43 [2023-12-16 16:13:52,510 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 16:13:52,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 16:13:52,511 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 16:13:52,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 46 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 16:13:52,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 16:13:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2023-12-16 16:13:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-12-16 16:13:52,516 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2023-12-16 16:13:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:13:52,516 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-12-16 16:13:52,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-12-16 16:13:52,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 16:13:52,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:52,517 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:52,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-16 16:13:52,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:52,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:52,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1748370994, now seen corresponding path program 1 times [2023-12-16 16:13:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775375198] [2023-12-16 16:13:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:52,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:52,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:52,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:52,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-16 16:13:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 16:13:52,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 16:13:52,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 16:13:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 16:13:52,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 16:13:52,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-16 16:13:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775375198] [2023-12-16 16:13:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775375198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 16:13:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 16:13:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 16:13:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048299599] [2023-12-16 16:13:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 16:13:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 16:13:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-16 16:13:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 16:13:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:13:52,787 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 16:13:52,803 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2023-12-16 16:13:52,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 16:13:52,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-16 16:13:52,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 16:13:52,804 INFO L225 Difference]: With dead ends: 49 [2023-12-16 16:13:52,804 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 16:13:52,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 16:13:52,805 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 16:13:52,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 16:13:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 16:13:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2023-12-16 16:13:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-16 16:13:52,808 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2023-12-16 16:13:52,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 16:13:52,808 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-16 16:13:52,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 16:13:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-16 16:13:52,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 16:13:52,809 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 16:13:52,809 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 16:13:52,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-12-16 16:13:53,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:53,015 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 16:13:53,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 16:13:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2102859357, now seen corresponding path program 1 times [2023-12-16 16:13:53,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-16 16:13:53,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449973810] [2023-12-16 16:13:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 16:13:53,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:53,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-16 16:13:53,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-16 16:13:53,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-16 16:13:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 16:13:53,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-16 16:13:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-16 16:13:53,163 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-12-16 16:13:53,163 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-16 16:13:53,164 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 16:13:53,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-12-16 16:13:53,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-16 16:13:53,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 16:13:53,372 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 16:13:53,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:13:53 BoogieIcfgContainer [2023-12-16 16:13:53,388 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 16:13:53,388 INFO L158 Benchmark]: Toolchain (without parser) took 3374.34ms. Allocated memory is still 324.0MB. Free memory was 269.7MB in the beginning and 200.8MB in the end (delta: 68.8MB). Peak memory consumption was 70.4MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,388 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 203.4MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 89.1kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 16:13:53,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.55ms. Allocated memory is still 324.0MB. Free memory was 269.7MB in the beginning and 251.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.05ms. Allocated memory is still 324.0MB. Free memory was 251.3MB in the beginning and 249.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,389 INFO L158 Benchmark]: Boogie Preprocessor took 33.87ms. Allocated memory is still 324.0MB. Free memory was 249.2MB in the beginning and 246.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,389 INFO L158 Benchmark]: RCFGBuilder took 316.44ms. Allocated memory is still 324.0MB. Free memory was 246.6MB in the beginning and 231.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,389 INFO L158 Benchmark]: TraceAbstraction took 2595.53ms. Allocated memory is still 324.0MB. Free memory was 231.4MB in the beginning and 200.8MB in the end (delta: 30.6MB). Peak memory consumption was 31.6MB. Max. memory is 8.0GB. [2023-12-16 16:13:53,390 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 203.4MB. Free memory was 149.8MB in the beginning and 149.7MB in the end (delta: 89.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 373.55ms. Allocated memory is still 324.0MB. Free memory was 269.7MB in the beginning and 251.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.05ms. Allocated memory is still 324.0MB. Free memory was 251.3MB in the beginning and 249.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.87ms. Allocated memory is still 324.0MB. Free memory was 249.2MB in the beginning and 246.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 316.44ms. Allocated memory is still 324.0MB. Free memory was 246.6MB in the beginning and 231.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 2595.53ms. Allocated memory is still 324.0MB. Free memory was 231.4MB in the beginning and 200.8MB in the end (delta: 30.6MB). Peak memory consumption was 31.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 557]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) [L535] COND FALSE !(a == 0) VAL [a={6:0}] [L536] p = a VAL [a={6:0}, p={6:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) [L539] p->h = 1 [L543] t = (List) malloc(sizeof(struct node)) [L544] COND FALSE !(t == 0) VAL [a={6:0}, flag=2, p={6:0}, t={3:0}] [L545] p->n = t [L546] EXPR p->n [L546] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 [L549] p = a VAL [a={6:0}, flag=2, p={6:0}, t={3:0}] [L550] COND TRUE \read(flag) [L551] EXPR p->h [L551] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 [L557] reach_error() VAL [a={6:0}, flag=2, p={6:0}, t={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 223 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 126 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 97 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 192 SizeOfPredicates, 15 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-12-16 16:13:53,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...