/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_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:55:58,561 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:55:58,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:55:58,636 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:55:58,637 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:55:58,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:55:58,663 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:55:58,663 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:55:58,663 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:55:58,666 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:55:58,667 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:55:58,667 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:55:58,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:55:58,668 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:55:58,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:55:58,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:55:58,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:55:58,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:55:58,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:55:58,670 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:55:58,670 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:55:58,671 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:55:58,671 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:55:58,671 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:55:58,671 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:55:58,672 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:55:58,672 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:55:58,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:55:58,672 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:55:58,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:55:58,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:55:58,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:55:58,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:55:58,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:55:58,890 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:55:58,890 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:55:58,891 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2023-12-16 04:56:00,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:56:00,208 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:56:00,209 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c [2023-12-16 04:56:00,215 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b912499a7/63bef4e22c4748d78e2937580bb86822/FLAG4e931b918 [2023-12-16 04:56:00,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b912499a7/63bef4e22c4748d78e2937580bb86822 [2023-12-16 04:56:00,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:56:00,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:56:00,234 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:56:00,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:56:00,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:56:00,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b2805e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00, skipping insertion in model container [2023-12-16 04:56:00,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:56:00,372 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2023-12-16 04:56:00,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:56:00,401 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:56:00,411 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2023-12-16 04:56:00,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:56:00,437 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:56:00,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00 WrapperNode [2023-12-16 04:56:00,437 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:56:00,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:56:00,439 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:56:00,439 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:56:00,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,455 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,474 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2023-12-16 04:56:00,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:56:00,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:56:00,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:56:00,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:56:00,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,499 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2023-12-16 04:56:00,500 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,500 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:56:00,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:56:00,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:56:00,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:56:00,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (1/1) ... [2023-12-16 04:56:00,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:56:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:56:00,570 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 04:56:00,611 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 04:56:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:56:00,656 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-16 04:56:00,657 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-16 04:56:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:56:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:56:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 04:56:00,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:56:00,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:56:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-16 04:56:00,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-16 04:56:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 04:56:00,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 04:56:00,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:56:00,749 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:56:00,751 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:56:00,905 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:56:00,935 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:56:00,935 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 04:56:00,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:56:00 BoogieIcfgContainer [2023-12-16 04:56:00,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:56:00,937 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:56:00,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:56:00,939 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:56:00,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:56:00" (1/3) ... [2023-12-16 04:56:00,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c206b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:56:00, skipping insertion in model container [2023-12-16 04:56:00,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:56:00" (2/3) ... [2023-12-16 04:56:00,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c206b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:56:00, skipping insertion in model container [2023-12-16 04:56:00,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:56:00" (3/3) ... [2023-12-16 04:56:00,940 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2023-12-16 04:56:00,952 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:56:00,952 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:56:00,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:56:00,986 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;@11fe592a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:56:00,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:56:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:56:00,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 04:56:00,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:56:00,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:56:00,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:56:01,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:56:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash 69718771, now seen corresponding path program 1 times [2023-12-16 04:56:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:56:01,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288130426] [2023-12-16 04:56:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:56:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:56:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:56:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:56:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:56:01,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:56:01,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288130426] [2023-12-16 04:56:01,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288130426] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:56:01,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:56:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:56:01,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905893450] [2023-12-16 04:56:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:56:01,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:56:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:56:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:56:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:56:01,188 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:56:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:56:01,217 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2023-12-16 04:56:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:56:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-16 04:56:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:56:01,223 INFO L225 Difference]: With dead ends: 49 [2023-12-16 04:56:01,224 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 04:56:01,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 04:56:01,229 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:56:01,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:56:01,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 04:56:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 04:56:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:56:01,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-12-16 04:56:01,253 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 20 [2023-12-16 04:56:01,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:56:01,253 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-12-16 04:56:01,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:56:01,253 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-12-16 04:56:01,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-16 04:56:01,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:56:01,255 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:56:01,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:56:01,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:56:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:56:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1760696209, now seen corresponding path program 1 times [2023-12-16 04:56:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:56:01,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531005509] [2023-12-16 04:56:01,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:56:01,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:56:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:56:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:56:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:56:01,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:56:01,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531005509] [2023-12-16 04:56:01,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531005509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:56:01,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:56:01,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 04:56:01,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981973637] [2023-12-16 04:56:01,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:56:01,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 04:56:01,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:56:01,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 04:56:01,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:56:01,554 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:56:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:56:01,624 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-12-16 04:56:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:56:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-12-16 04:56:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:56:01,625 INFO L225 Difference]: With dead ends: 30 [2023-12-16 04:56:01,625 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 04:56:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:56:01,626 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:56:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 96 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:56:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 04:56:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 04:56:01,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:56:01,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-12-16 04:56:01,631 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2023-12-16 04:56:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:56:01,632 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-12-16 04:56:01,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:56:01,632 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-12-16 04:56:01,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 04:56:01,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:56:01,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:56:01,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:56:01,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:56:01,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:56:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1602640553, now seen corresponding path program 1 times [2023-12-16 04:56:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:56:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874575147] [2023-12-16 04:56:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:56:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:56:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-16 04:56:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:56:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-16 04:56:01,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:56:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:56:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:56:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874575147] [2023-12-16 04:56:01,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874575147] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:56:01,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:56:01,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 04:56:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830338622] [2023-12-16 04:56:01,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:56:01,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:56:01,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:56:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:56:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:56:01,889 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:56:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:56:01,938 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2023-12-16 04:56:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:56:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2023-12-16 04:56:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:56:01,939 INFO L225 Difference]: With dead ends: 28 [2023-12-16 04:56:01,939 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:56:01,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:56:01,940 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:56:01,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 102 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:56:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:56:01,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:56:01,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 04:56:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:56:01,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-12-16 04:56:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:56:01,942 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:56:01,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-16 04:56:01,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:56:01,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:56:01,944 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:56:01,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:56:01,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:56:01,964 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int#1| |ULTIMATE.start_main_~a~0#1.base|)) [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-12-16 04:56:01,965 INFO L902 garLoopResultBuilder]: At program point L19-2(line 19) the Hoare annotation is: true [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-12-16 04:56:01,965 INFO L895 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int#1| |ULTIMATE.start_main_~a~0#1.base|)) [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2023-12-16 04:56:01,965 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_#t~mem18#1|) (= ((as const (Array Int Int)) 0) (select |#memory_int#1| |ULTIMATE.start_main_~a~0#1.base|)) (= |ULTIMATE.start_main_#t~mem17#1| 0)) [2023-12-16 04:56:01,965 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int#1| |ULTIMATE.start_main_~a~0#1.base|)) [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~mem15#1| 0) (= ((as const (Array Int Int)) 0) (select |#memory_int#1| |ULTIMATE.start_main_~a~0#1.base|)) (= |ULTIMATE.start_main_#t~mem14#1| 0)) [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-12-16 04:56:01,966 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-12-16 04:56:01,967 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2023-12-16 04:56:01,967 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-12-16 04:56:01,967 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2023-12-16 04:56:01,967 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-12-16 04:56:01,969 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-16 04:56:01,970 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:56:01,975 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateExpressionWithContext(DefaultTranslator.java:165) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContext(ModelTranslationContainer.java:101) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContextToString(ModelTranslationContainer.java:91) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionWithContextToString(BacktranslationService.java:98) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.(InvariantResult.java:47) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:455) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 04:56:01,976 INFO L158 Benchmark]: Toolchain (without parser) took 1745.00ms. Allocated memory is still 225.4MB. Free memory was 173.7MB in the beginning and 107.8MB in the end (delta: 65.9MB). Peak memory consumption was 66.8MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,977 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 174.1MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:56:01,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.81ms. Allocated memory is still 225.4MB. Free memory was 173.7MB in the beginning and 162.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.85ms. Allocated memory is still 225.4MB. Free memory was 162.4MB in the beginning and 161.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,977 INFO L158 Benchmark]: Boogie Preprocessor took 47.46ms. Allocated memory is still 225.4MB. Free memory was 161.0MB in the beginning and 159.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,977 INFO L158 Benchmark]: RCFGBuilder took 412.14ms. Allocated memory is still 225.4MB. Free memory was 158.9MB in the beginning and 145.7MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,978 INFO L158 Benchmark]: TraceAbstraction took 1039.57ms. Allocated memory is still 225.4MB. Free memory was 145.0MB in the beginning and 107.8MB in the end (delta: 37.2MB). Peak memory consumption was 37.5MB. Max. memory is 8.0GB. [2023-12-16 04:56:01,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 174.1MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 203.81ms. Allocated memory is still 225.4MB. Free memory was 173.7MB in the beginning and 162.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.85ms. Allocated memory is still 225.4MB. Free memory was 162.4MB in the beginning and 161.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.46ms. Allocated memory is still 225.4MB. Free memory was 161.0MB in the beginning and 159.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 412.14ms. Allocated memory is still 225.4MB. Free memory was 158.9MB in the beginning and 145.7MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1039.57ms. Allocated memory is still 225.4MB. Free memory was 145.0MB in the beginning and 107.8MB in the end (delta: 37.2MB). Peak memory consumption was 37.5MB. 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 - PositiveResult [Line: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 225 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 68 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 47 HoareAnnotationTreeSize, 13 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 14/14 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:264) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-16 04:56:01,992 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...