/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/nec20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 15:15:18,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 15:15:18,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 15:15:18,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-14 15:15:18,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-14 15:15:18,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-14 15:15:18,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-14 15:15:18,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-14 15:15:18,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-14 15:15:18,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-14 15:15:18,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-14 15:15:18,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-14 15:15:18,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 15:15:18,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 15:15:18,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 15:15:18,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 15:15:18,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 15:15:18,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 15:15:18,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 15:15:18,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 15:15:18,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 15:15:18,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 15:15:18,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 15:15:18,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 15:15:18,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-14 15:15:18,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-14 15:15:18,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-14 15:15:18,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-14 15:15:18,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-14 15:15:18,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-14 15:15:18,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-14 15:15:18,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-14 15:15:18,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-14 15:15:18,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-14 15:15:18,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-14 15:15:18,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-14 15:15:18,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-14 15:15:18,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-14 15:15:18,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 15:15:18,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 15:15:18,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 15:15:18,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-14 15:15:18,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 15:15:18,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 15:15:18,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-14 15:15:18,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-14 15:15:18,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-14 15:15:18,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-14 15:15:18,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-14 15:15:18,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-14 15:15:18,622 INFO L138 SettingsManager]: * Use SBE=true [2022-02-14 15:15:18,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 15:15:18,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 15:15:18,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 15:15:18,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-14 15:15:18,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-14 15:15:18,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-14 15:15:18,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-14 15:15:18,625 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 15:15:18,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 15:15:18,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 15:15:18,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 15:15:18,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 15:15:18,849 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 15:15:18,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c [2022-02-14 15:15:18,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67575a0b/8253c009492a4e0baca1358a4b03543b/FLAG930b96b34 [2022-02-14 15:15:19,233 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 15:15:19,234 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c [2022-02-14 15:15:19,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67575a0b/8253c009492a4e0baca1358a4b03543b/FLAG930b96b34 [2022-02-14 15:15:19,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a67575a0b/8253c009492a4e0baca1358a4b03543b [2022-02-14 15:15:19,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 15:15:19,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-14 15:15:19,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 15:15:19,688 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 15:15:19,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 15:15:19,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ecd37f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19, skipping insertion in model container [2022-02-14 15:15:19,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 15:15:19,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 15:15:19,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2022-02-14 15:15:19,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 15:15:19,825 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 15:15:19,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2022-02-14 15:15:19,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 15:15:19,848 INFO L208 MainTranslator]: Completed translation [2022-02-14 15:15:19,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19 WrapperNode [2022-02-14 15:15:19,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 15:15:19,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 15:15:19,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 15:15:19,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 15:15:19,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 15:15:19,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 15:15:19,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 15:15:19,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 15:15:19,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (1/1) ... [2022-02-14 15:15:19,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 15:15:19,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 15:15:19,890 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) [2022-02-14 15:15:19,895 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 [2022-02-14 15:15:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 15:15:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 15:15:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 15:15:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 15:15:19,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 15:15:19,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 15:15:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 15:15:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 15:15:19,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 15:15:19,958 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 15:15:19,959 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 15:15:20,049 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 15:15:20,053 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 15:15:20,053 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 15:15:20,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:15:20 BoogieIcfgContainer [2022-02-14 15:15:20,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 15:15:20,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 15:15:20,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 15:15:20,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 15:15:20,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 03:15:19" (1/3) ... [2022-02-14 15:15:20,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe94509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 03:15:20, skipping insertion in model container [2022-02-14 15:15:20,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 03:15:19" (2/3) ... [2022-02-14 15:15:20,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe94509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 03:15:20, skipping insertion in model container [2022-02-14 15:15:20,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 03:15:20" (3/3) ... [2022-02-14 15:15:20,059 INFO L111 eAbstractionObserver]: Analyzing ICFG nec20.c [2022-02-14 15:15:20,062 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-14 15:15:20,063 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 15:15:20,092 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 15:15:20,096 INFO L339 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=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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 15:15:20,096 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 15:15:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-14 15:15:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-14 15:15:20,109 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 15:15:20,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 15:15:20,110 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 15:15:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 15:15:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1512797340, now seen corresponding path program 1 times [2022-02-14 15:15:20,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 15:15:20,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918019281] [2022-02-14 15:15:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 15:15:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 15:15:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 15:15:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 15:15:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 15:15:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 15:15:20,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 15:15:20,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918019281] [2022-02-14 15:15:20,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918019281] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 15:15:20,368 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 15:15:20,368 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 15:15:20,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638297928] [2022-02-14 15:15:20,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 15:15:20,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 15:15:20,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 15:15:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 15:15:20,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-14 15:15:20,400 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 15:15:20,535 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2022-02-14 15:15:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 15:15:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-14 15:15:20,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 15:15:20,546 INFO L225 Difference]: With dead ends: 53 [2022-02-14 15:15:20,546 INFO L226 Difference]: Without dead ends: 22 [2022-02-14 15:15:20,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-02-14 15:15:20,550 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-14 15:15:20,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-14 15:15:20,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-14 15:15:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-02-14 15:15:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-02-14 15:15:20,581 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2022-02-14 15:15:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 15:15:20,581 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-02-14 15:15:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-02-14 15:15:20,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-14 15:15:20,583 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 15:15:20,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 15:15:20,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 15:15:20,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 15:15:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 15:15:20,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2102111586, now seen corresponding path program 1 times [2022-02-14 15:15:20,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 15:15:20,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459342345] [2022-02-14 15:15:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 15:15:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 15:15:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 15:15:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 15:15:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 15:15:20,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 15:15:20,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 15:15:20,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459342345] [2022-02-14 15:15:20,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459342345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 15:15:20,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 15:15:20,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-14 15:15:20,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740574282] [2022-02-14 15:15:20,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 15:15:20,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-14 15:15:20,714 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 15:15:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-14 15:15:20,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-14 15:15:20,714 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 15:15:20,803 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2022-02-14 15:15:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-14 15:15:20,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-02-14 15:15:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 15:15:20,804 INFO L225 Difference]: With dead ends: 29 [2022-02-14 15:15:20,804 INFO L226 Difference]: Without dead ends: 23 [2022-02-14 15:15:20,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-14 15:15:20,805 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 15:15:20,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-14 15:15:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-02-14 15:15:20,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2022-02-14 15:15:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-02-14 15:15:20,810 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2022-02-14 15:15:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 15:15:20,810 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-02-14 15:15:20,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 15:15:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-02-14 15:15:20,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-02-14 15:15:20,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 15:15:20,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 15:15:20,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 15:15:20,812 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 15:15:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 15:15:20,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1230699476, now seen corresponding path program 1 times [2022-02-14 15:15:20,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 15:15:20,813 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787379092] [2022-02-14 15:15:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 15:15:20,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 15:15:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 15:15:20,841 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-14 15:15:20,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-14 15:15:20,881 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-14 15:15:20,881 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-14 15:15:20,882 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 15:15:20,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-14 15:15:20,885 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-14 15:15:20,887 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 15:15:20,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 03:15:20 BoogieIcfgContainer [2022-02-14 15:15:20,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 15:15:20,901 INFO L158 Benchmark]: Toolchain (without parser) took 1225.54ms. Allocated memory was 189.8MB in the beginning and 230.7MB in the end (delta: 40.9MB). Free memory was 139.0MB in the beginning and 146.9MB in the end (delta: -7.9MB). Peak memory consumption was 33.0MB. Max. memory is 8.0GB. [2022-02-14 15:15:20,901 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 131.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 15:15:20,901 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.68ms. Allocated memory was 189.8MB in the beginning and 230.7MB in the end (delta: 40.9MB). Free memory was 138.9MB in the beginning and 207.1MB in the end (delta: -68.3MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. [2022-02-14 15:15:20,902 INFO L158 Benchmark]: Boogie Preprocessor took 16.20ms. Allocated memory is still 230.7MB. Free memory was 207.1MB in the beginning and 206.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 15:15:20,902 INFO L158 Benchmark]: RCFGBuilder took 188.31ms. Allocated memory is still 230.7MB. Free memory was 206.1MB in the beginning and 195.6MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-14 15:15:20,902 INFO L158 Benchmark]: TraceAbstraction took 844.72ms. Allocated memory is still 230.7MB. Free memory was 195.1MB in the beginning and 146.9MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 8.0GB. [2022-02-14 15:15:20,904 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 189.8MB. Free memory was 155.4MB in the beginning and 155.2MB in the end (delta: 131.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.68ms. Allocated memory was 189.8MB in the beginning and 230.7MB in the end (delta: 40.9MB). Free memory was 138.9MB in the beginning and 207.1MB in the end (delta: -68.3MB). Peak memory consumption was 15.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.20ms. Allocated memory is still 230.7MB. Free memory was 207.1MB in the beginning and 206.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 188.31ms. Allocated memory is still 230.7MB. Free memory was 206.1MB in the beginning and 195.6MB in the end (delta: 10.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 844.72ms. Allocated memory is still 230.7MB. Free memory was 195.1MB in the beginning and 146.9MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. 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: [L12] int b; VAL [\old(b)=260, b=0] [L15] _Bool k=__VERIFIER_nondet_bool(); [L16] unsigned int i,n,j; [L17] int a[1025]; VAL [b=0, k=1] [L19] COND TRUE \read(k) [L20] n=0 VAL [b=0, k=1, n=0] [L25] i=0 [L26] j=__VERIFIER_nondet_uint() [L27] COND FALSE !(j > 10000) VAL [b=0, i=0, j=-4294966273, k=1, n=0] [L30] COND TRUE i <= n [L31] i++ [L32] j= j +2 VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L30] COND FALSE !(i <= n) VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L35] a[i]=0 VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L36] CALL __VERIFIER_assert(j<1025) VAL [\old(cond)=0, b=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, b=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, b=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 47 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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! [2022-02-14 15:15:20,930 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...