/usr/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-regression/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:50:02,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:50:02,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:50:02,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 04:50:02,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:50:02,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:50:02,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:50:02,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 04:50:02,734 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:50:02,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:50:02,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:50:02,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:50:02,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:50:02,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:50:02,735 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:50:02,736 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:50:02,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:50:02,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:50:02,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:50:02,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:50:02,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:50:02,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:50:02,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:50:02,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:50:02,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:50:02,934 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:50:02,935 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:50:02,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.i [2023-04-01 04:50:04,017 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:50:04,165 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:50:04,166 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i [2023-04-01 04:50:04,170 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb435b49a/d6fbb685aa134340a31b559ede580862/FLAG1bfea85f7 [2023-04-01 04:50:04,181 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb435b49a/d6fbb685aa134340a31b559ede580862 [2023-04-01 04:50:04,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:50:04,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:50:04,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:50:04,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:50:04,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:50:04,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3d05a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04, skipping insertion in model container [2023-04-01 04:50:04,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:50:04,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:50:04,295 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2023-04-01 04:50:04,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:50:04,323 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:50:04,332 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2023-04-01 04:50:04,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:50:04,344 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:50:04,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04 WrapperNode [2023-04-01 04:50:04,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:50:04,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:50:04,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:50:04,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:50:04,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,372 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:50:04,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:50:04,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:50:04,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:50:04,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (1/1) ... [2023-04-01 04:50:04,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:50:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:50:04,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 04:50:04,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2023-04-01 04:50:04,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:50:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:50:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:50:04,505 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:50:04,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:50:04,605 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:50:04,624 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:50:04,624 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 04:50:04,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:50:04 BoogieIcfgContainer [2023-04-01 04:50:04,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:50:04,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:50:04,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:50:04,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:50:04,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:50:04" (1/3) ... [2023-04-01 04:50:04,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c662d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:50:04, skipping insertion in model container [2023-04-01 04:50:04,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:50:04" (2/3) ... [2023-04-01 04:50:04,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c662d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:50:04, skipping insertion in model container [2023-04-01 04:50:04,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:50:04" (3/3) ... [2023-04-01 04:50:04,644 INFO L112 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2023-04-01 04:50:04,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:50:04,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:50:04,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:50:04,756 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@c6d8af4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:50:04,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:50:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 04:50:04,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 04:50:04,767 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:50:04,767 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:50:04,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:50:04,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:50:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2095813663, now seen corresponding path program 1 times [2023-04-01 04:50:04,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:50:04,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125366940] [2023-04-01 04:50:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:50:04,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:50:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:50:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:50:05,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:50:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125366940] [2023-04-01 04:50:05,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125366940] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 04:50:05,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 04:50:05,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 04:50:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845471766] [2023-04-01 04:50:05,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 04:50:05,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-01 04:50:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:50:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-01 04:50:05,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 04:50:05,095 INFO L87 Difference]: Start difference. First operand has 18 states, 8 states have (on average 1.375) internal successors, (11), 11 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 04:50:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:50:05,153 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-04-01 04:50:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 04:50:05,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 04:50:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:50:05,159 INFO L225 Difference]: With dead ends: 37 [2023-04-01 04:50:05,159 INFO L226 Difference]: Without dead ends: 21 [2023-04-01 04:50:05,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 04:50:05,167 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:50:05,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:50:05,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-04-01 04:50:05,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-04-01 04:50:05,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 04:50:05,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2023-04-01 04:50:05,192 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2023-04-01 04:50:05,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:50:05,193 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2023-04-01 04:50:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 04:50:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2023-04-01 04:50:05,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 04:50:05,194 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:50:05,194 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:50:05,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:50:05,194 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:50:05,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:50:05,195 INFO L85 PathProgramCache]: Analyzing trace with hash 222175854, now seen corresponding path program 1 times [2023-04-01 04:50:05,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:50:05,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152831352] [2023-04-01 04:50:05,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:50:05,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:50:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:50:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:50:05,317 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 04:50:05,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152831352] [2023-04-01 04:50:05,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152831352] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 04:50:05,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612392519] [2023-04-01 04:50:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:50:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:50:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:50:05,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 04:50:05,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 04:50:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 04:50:05,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 04:50:05,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 04:50:05,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:50:05,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 04:50:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 04:50:05,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612392519] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 04:50:05,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1140966202] [2023-04-01 04:50:05,501 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-04-01 04:50:05,501 INFO L166 IcfgInterpreter]: Building call graph [2023-04-01 04:50:05,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-01 04:50:05,507 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-01 04:50:05,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-01 04:50:05,575 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 9 for LOIs [2023-04-01 04:50:05,693 INFO L197 IcfgInterpreter]: Interpreting procedure check_error with input of size 27 for LOIs [2023-04-01 04:50:05,744 INFO L197 IcfgInterpreter]: Interpreting procedure __blast_assert with input of size 9 for LOIs [2023-04-01 04:50:05,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-01 04:50:05,757 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-01 04:50:05,971 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '226#(and (<= 1 |#StackHeapBarrier|) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-01 04:50:05,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-01 04:50:05,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 04:50:05,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-04-01 04:50:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162305991] [2023-04-01 04:50:05,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 04:50:05,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 04:50:05,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 04:50:05,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 04:50:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-04-01 04:50:05,977 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 04:50:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 04:50:06,020 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-04-01 04:50:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 04:50:06,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-04-01 04:50:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 04:50:06,021 INFO L225 Difference]: With dead ends: 30 [2023-04-01 04:50:06,021 INFO L226 Difference]: Without dead ends: 27 [2023-04-01 04:50:06,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-04-01 04:50:06,022 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 04:50:06,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 04:50:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-04-01 04:50:06,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2023-04-01 04:50:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-04-01 04:50:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2023-04-01 04:50:06,027 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2023-04-01 04:50:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 04:50:06,027 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2023-04-01 04:50:06,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 04:50:06,027 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2023-04-01 04:50:06,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-04-01 04:50:06,027 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:50:06,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:50:06,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-01 04:50:06,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 04:50:06,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:50:06,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:50:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1704327995, now seen corresponding path program 2 times [2023-04-01 04:50:06,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:50:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093321339] [2023-04-01 04:50:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:50:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:50:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:50:06,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 04:50:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:50:06,259 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 04:50:06,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 04:50:06,260 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:50:06,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-01 04:50:06,263 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-04-01 04:50:06,265 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:50:06,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:50:06 BoogieIcfgContainer [2023-04-01 04:50:06,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:50:06,280 INFO L158 Benchmark]: Toolchain (without parser) took 2095.98ms. Allocated memory was 178.3MB in the beginning and 280.0MB in the end (delta: 101.7MB). Free memory was 121.2MB in the beginning and 130.5MB in the end (delta: -9.3MB). Peak memory consumption was 93.1MB. Max. memory is 8.0GB. [2023-04-01 04:50:06,282 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 178.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:50:06,282 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.88ms. Allocated memory is still 178.3MB. Free memory was 121.0MB in the beginning and 111.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:50:06,282 INFO L158 Benchmark]: Boogie Preprocessor took 28.87ms. Allocated memory is still 178.3MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 04:50:06,282 INFO L158 Benchmark]: RCFGBuilder took 250.47ms. Allocated memory is still 178.3MB. Free memory was 109.7MB in the beginning and 99.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:50:06,283 INFO L158 Benchmark]: TraceAbstraction took 1652.16ms. Allocated memory was 178.3MB in the beginning and 280.0MB in the end (delta: 101.7MB). Free memory was 98.6MB in the beginning and 130.5MB in the end (delta: -31.9MB). Peak memory consumption was 70.1MB. Max. memory is 8.0GB. [2023-04-01 04:50:06,284 INFO L339 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 178.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 158.88ms. Allocated memory is still 178.3MB. Free memory was 121.0MB in the beginning and 111.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.87ms. Allocated memory is still 178.3MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 250.47ms. Allocated memory is still 178.3MB. Free memory was 109.7MB in the beginning and 99.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1652.16ms. Allocated memory was 178.3MB in the beginning and 280.0MB in the end (delta: 101.7MB). Free memory was 98.6MB in the beginning and 130.5MB in the end (delta: -31.9MB). Peak memory consumption was 70.1MB. 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int i=0; VAL [i=0] [L26] COND TRUE i<5 [L27] i++ VAL [i=1] [L31] CALL check_error(i!=3) VAL [\old(b)=1] [L20] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L31] RET check_error(i!=3) VAL [i=1] [L26] COND TRUE i<5 [L27] i++ VAL [i=2] [L31] CALL check_error(i!=3) VAL [\old(b)=1] [L20] (b) ? (0) : __blast_assert () VAL [\old(b)=1, b=1] [L31] RET check_error(i!=3) VAL [i=2] [L26] COND TRUE i<5 [L27] i++ VAL [i=3] [L31] CALL check_error(i!=3) VAL [\old(b)=0] [L20] (b) ? (0) : __blast_assert () VAL [\old(b)=0, b=0] [L20] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 20 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 109 SizeOfPredicates, 1 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 6/12 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! [2023-04-01 04:50:06,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...