/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-regression/rule57_ebda_blast_2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 16:38:17,645 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 16:38:17,708 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 16:38:17,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 16:38:17,712 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 16:38:17,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 16:38:17,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 16:38:17,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 16:38:17,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 16:38:17,736 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 16:38:17,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 16:38:17,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 16:38:17,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 16:38:17,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 16:38:17,738 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 16:38:17,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 16:38:17,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 16:38:17,739 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 16:38:17,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 16:38:17,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 16:38:17,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 16:38:17,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 16:38:17,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 16:38:17,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 16:38:17,741 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 16:38:17,741 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 16:38:17,741 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 16:38:17,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 16:38:17,742 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 16:38:17,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:38:17,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 16:38:17,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 16:38:17,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 16:38:17,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 16:38:17,744 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 16:38:17,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 16:38:17,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 16:38:17,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 16:38:17,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 16:38:17,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 16:38:17,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 16:38:17,937 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 16:38:17,937 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 16:38:17,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule57_ebda_blast_2.i [2023-12-19 16:38:18,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 16:38:18,929 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 16:38:18,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule57_ebda_blast_2.i [2023-12-19 16:38:18,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8643b7cf/02b214e2425846a8b7f025e7cb89f0b3/FLAG5bc55eda0 [2023-12-19 16:38:18,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8643b7cf/02b214e2425846a8b7f025e7cb89f0b3 [2023-12-19 16:38:18,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 16:38:18,951 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 16:38:18,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 16:38:18,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 16:38:18,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 16:38:18,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:38:18" (1/1) ... [2023-12-19 16:38:18,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8770e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:18, skipping insertion in model container [2023-12-19 16:38:18,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:38:18" (1/1) ... [2023-12-19 16:38:18,977 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 16:38:19,088 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule57_ebda_blast_2.i[341,354] [2023-12-19 16:38:19,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:38:19,128 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 16:38:19,135 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule57_ebda_blast_2.i[341,354] [2023-12-19 16:38:19,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:38:19,152 INFO L206 MainTranslator]: Completed translation [2023-12-19 16:38:19,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19 WrapperNode [2023-12-19 16:38:19,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 16:38:19,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 16:38:19,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 16:38:19,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 16:38:19,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,178 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 109 [2023-12-19 16:38:19,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 16:38:19,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 16:38:19,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 16:38:19,178 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 16:38:19,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,201 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2023-12-19 16:38:19,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 16:38:19,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 16:38:19,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 16:38:19,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 16:38:19,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (1/1) ... [2023-12-19 16:38:19,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:38:19,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:38:19,230 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) [2023-12-19 16:38:19,234 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 [2023-12-19 16:38:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-19 16:38:19,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-12-19 16:38:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-12-19 16:38:19,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 16:38:19,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 16:38:19,323 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 16:38:19,324 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 16:38:19,450 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 16:38:19,478 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 16:38:19,479 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-19 16:38:19,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:38:19 BoogieIcfgContainer [2023-12-19 16:38:19,479 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 16:38:19,480 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 16:38:19,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 16:38:19,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 16:38:19,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:38:18" (1/3) ... [2023-12-19 16:38:19,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538105e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:38:19, skipping insertion in model container [2023-12-19 16:38:19,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:38:19" (2/3) ... [2023-12-19 16:38:19,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538105e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:38:19, skipping insertion in model container [2023-12-19 16:38:19,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:38:19" (3/3) ... [2023-12-19 16:38:19,484 INFO L112 eAbstractionObserver]: Analyzing ICFG rule57_ebda_blast_2.i [2023-12-19 16:38:19,497 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 16:38:19,497 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 16:38:19,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 16:38:19,528 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;@54731fe7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 16:38:19,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 16:38:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:38:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-19 16:38:19,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:38:19,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:38:19,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:38:19,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:38:19,540 INFO L85 PathProgramCache]: Analyzing trace with hash -803701651, now seen corresponding path program 1 times [2023-12-19 16:38:19,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:38:19,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305051003] [2023-12-19 16:38:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:38:19,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:38:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:38:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:19,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:38:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:38:19,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305051003] [2023-12-19 16:38:19,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305051003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:38:19,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:38:19,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 16:38:19,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213543280] [2023-12-19 16:38:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:38:19,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 16:38:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:38:19,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 16:38:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:38:19,876 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 16:38:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:38:19,935 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-12-19 16:38:19,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:38:19,938 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-12-19 16:38:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:38:19,942 INFO L225 Difference]: With dead ends: 35 [2023-12-19 16:38:19,942 INFO L226 Difference]: Without dead ends: 25 [2023-12-19 16:38:19,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:38:19,947 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:38:19,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 111 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:38:19,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-19 16:38:19,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-12-19 16:38:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:38:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2023-12-19 16:38:19,969 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 11 [2023-12-19 16:38:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:38:19,970 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2023-12-19 16:38:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 16:38:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2023-12-19 16:38:19,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-19 16:38:19,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:38:19,971 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:38:19,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 16:38:19,972 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:38:19,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:38:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash 598424643, now seen corresponding path program 1 times [2023-12-19 16:38:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:38:19,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923064787] [2023-12-19 16:38:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:38:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:38:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:38:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 16:38:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 16:38:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:38:20,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923064787] [2023-12-19 16:38:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923064787] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:38:20,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:38:20,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 16:38:20,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681767908] [2023-12-19 16:38:20,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:38:20,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 16:38:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:38:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 16:38:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:38:20,105 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:38:20,169 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2023-12-19 16:38:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-19 16:38:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-12-19 16:38:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:38:20,170 INFO L225 Difference]: With dead ends: 33 [2023-12-19 16:38:20,170 INFO L226 Difference]: Without dead ends: 27 [2023-12-19 16:38:20,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:38:20,171 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:38:20,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:38:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-12-19 16:38:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-12-19 16:38:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:38:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-12-19 16:38:20,175 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2023-12-19 16:38:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:38:20,175 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-12-19 16:38:20,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-12-19 16:38:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-19 16:38:20,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:38:20,176 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:38:20,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 16:38:20,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:38:20,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:38:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 981898481, now seen corresponding path program 1 times [2023-12-19 16:38:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:38:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313333861] [2023-12-19 16:38:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:38:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:38:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:38:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 16:38:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 16:38:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:38:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313333861] [2023-12-19 16:38:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313333861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:38:20,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:38:20,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-19 16:38:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320833072] [2023-12-19 16:38:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:38:20,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-19 16:38:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:38:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-19 16:38:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:38:20,314 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:38:20,368 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-12-19 16:38:20,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-19 16:38:20,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-12-19 16:38:20,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:38:20,370 INFO L225 Difference]: With dead ends: 49 [2023-12-19 16:38:20,371 INFO L226 Difference]: Without dead ends: 38 [2023-12-19 16:38:20,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:38:20,372 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:38:20,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 84 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:38:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-19 16:38:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2023-12-19 16:38:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:38:20,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-12-19 16:38:20,376 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 20 [2023-12-19 16:38:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:38:20,376 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-12-19 16:38:20,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-12-19 16:38:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 16:38:20,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:38:20,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:38:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 16:38:20,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:38:20,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:38:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1237826597, now seen corresponding path program 1 times [2023-12-19 16:38:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:38:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065855130] [2023-12-19 16:38:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:38:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:38:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:38:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-12-19 16:38:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:38:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 16:38:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:38:20,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065855130] [2023-12-19 16:38:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065855130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:38:20,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:38:20,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 16:38:20,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755880871] [2023-12-19 16:38:20,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:38:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:38:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:38:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:38:20,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:38:20,462 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:38:20,493 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-12-19 16:38:20,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-19 16:38:20,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-12-19 16:38:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:38:20,496 INFO L225 Difference]: With dead ends: 36 [2023-12-19 16:38:20,496 INFO L226 Difference]: Without dead ends: 29 [2023-12-19 16:38:20,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:38:20,501 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:38:20,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 66 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:38:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-19 16:38:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-12-19 16:38:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:38:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-12-19 16:38:20,518 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2023-12-19 16:38:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:38:20,518 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-12-19 16:38:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-19 16:38:20,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-12-19 16:38:20,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-19 16:38:20,519 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:38:20,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:38:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 16:38:20,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:38:20,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:38:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1282133337, now seen corresponding path program 1 times [2023-12-19 16:38:20,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:38:20,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439810229] [2023-12-19 16:38:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:38:20,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:38:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 16:38:20,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-19 16:38:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-19 16:38:20,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-12-19 16:38:20,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-19 16:38:20,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-19 16:38:20,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 16:38:20,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-12-19 16:38:20,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 16:38:20,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 04:38:20 BoogieIcfgContainer [2023-12-19 16:38:20,628 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 16:38:20,629 INFO L158 Benchmark]: Toolchain (without parser) took 1677.36ms. Allocated memory is still 202.4MB. Free memory was 157.4MB in the beginning and 80.2MB in the end (delta: 77.2MB). Peak memory consumption was 78.4MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,629 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 202.4MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 16:38:20,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.86ms. Allocated memory is still 202.4MB. Free memory was 157.0MB in the beginning and 145.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,629 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.72ms. Allocated memory is still 202.4MB. Free memory was 145.1MB in the beginning and 143.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,629 INFO L158 Benchmark]: Boogie Preprocessor took 30.50ms. Allocated memory is still 202.4MB. Free memory was 143.4MB in the beginning and 140.9MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,630 INFO L158 Benchmark]: RCFGBuilder took 269.89ms. Allocated memory is still 202.4MB. Free memory was 140.6MB in the beginning and 123.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,630 INFO L158 Benchmark]: TraceAbstraction took 1147.39ms. Allocated memory is still 202.4MB. Free memory was 123.1MB in the beginning and 80.2MB in the end (delta: 42.9MB). Peak memory consumption was 43.8MB. Max. memory is 8.0GB. [2023-12-19 16:38:20,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 202.4MB. Free memory is still 157.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.86ms. Allocated memory is still 202.4MB. Free memory was 157.0MB in the beginning and 145.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.72ms. Allocated memory is still 202.4MB. Free memory was 145.1MB in the beginning and 143.4MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.50ms. Allocated memory is still 202.4MB. Free memory was 143.4MB in the beginning and 140.9MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 269.89ms. Allocated memory is still 202.4MB. Free memory was 140.6MB in the beginning and 123.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 1147.39ms. Allocated memory is still 202.4MB. Free memory was 123.1MB in the beginning and 80.2MB in the end (delta: 42.9MB). Peak memory consumption was 43.8MB. 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: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] struct slot *tmp_slot; [L43] int used_tmp_slot = 0; [L44] int freed_tmp_slot = 1; [L138] CALL ebda_rsrc_controller() [L75] struct hotplug_slot *hp_slot_ptr; [L77] struct bus_info *bus_info_ptr1; [L78] int rc; VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L80] CALL, EXPR kzalloc(sizeof(*hp_slot_ptr), 1) VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L49] EXPR, FCALL calloc(1, size) [L49] return calloc(1, size); [L80] RET, EXPR kzalloc(sizeof(*hp_slot_ptr), 1) VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L80] hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), 1) [L81] COND FALSE !(!hp_slot_ptr) [L85] hp_slot_ptr->b = 5 VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L87] CALL, EXPR kzalloc(sizeof(*tmp_slot), 1) VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L49] EXPR, FCALL calloc(1, size) [L49] return calloc(1, size); [L87] RET, EXPR kzalloc(sizeof(*tmp_slot), 1) VAL [freed_tmp_slot=1, hp_slot_ptr={-1:0}, tmp_slot={0:0}, used_tmp_slot=0] [L87] tmp_slot = kzalloc(sizeof(*tmp_slot), 1) [L89] COND FALSE !(!tmp_slot) [L94] used_tmp_slot = 0 [L95] freed_tmp_slot = 0 [L97] tmp_slot->a = 2 [L98] tmp_slot->b = 3 [L100] CALL, EXPR ibmphp_find_same_bus_num() [L58] COND TRUE __VERIFIER_nondet_int() [L59] return 0; VAL [\result={0:0}, freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] [L100] RET, EXPR ibmphp_find_same_bus_num() [L100] bus_info_ptr1 = ibmphp_find_same_bus_num() [L101] COND TRUE !bus_info_ptr1 [L102] rc = -3 VAL [bus_info_ptr1={0:0}, freed_tmp_slot=0, hp_slot_ptr={-1:0}, rc=-3, tmp_slot={-2:0}, used_tmp_slot=0] [L129] EXPR hp_slot_ptr->private [L129] CALL kfree(hp_slot_ptr->private) [L52] COND FALSE !(p!=0 && p==tmp_slot) VAL [freed_tmp_slot=0, p={0:54}, p={0:54}, tmp_slot={-2:0}, used_tmp_slot=0] [L129] RET kfree(hp_slot_ptr->private) [L134] return rc; VAL [\result=-3, bus_info_ptr1={0:0}, freed_tmp_slot=0, hp_slot_ptr={-1:0}, rc=-3, tmp_slot={-2:0}, used_tmp_slot=0] [L138] RET ebda_rsrc_controller() [L139] COND TRUE !used_tmp_slot VAL [freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] [L140] (freed_tmp_slot) ? (0) : __blast_assert () [L140] CALL __blast_assert () [L9] reach_error() VAL [freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 353 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 251 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 102 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [2023-12-19 16:38:20,646 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...