/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/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 17:45:51,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 17:45:51,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 17:45:51,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 17:45:51,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 17:45:51,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 17:45:51,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 17:45:51,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 17:45:51,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 17:45:51,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 17:45:51,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 17:45:51,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 17:45:51,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 17:45:51,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 17:45:51,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 17:45:51,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 17:45:51,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 17:45:51,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 17:45:51,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 17:45:51,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 17:45:52,000 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 17:45:52,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 17:45:52,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 17:45:52,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 17:45:52,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 17:45:52,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 17:45:52,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 17:45:52,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 17:45:52,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 17:45:52,012 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 17:45:52,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 17:45:52,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 17:45:52,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 17:45:52,019 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 17:45:52,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:45:52,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 17:45:52,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 17:45:52,021 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 17:45:52,021 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 17:45:52,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 17:45:52,021 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 17:45:52,021 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 17:45:52,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 17:45:52,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 17:45:52,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 17:45:52,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 17:45:52,259 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 17:45:52,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-20 17:45:52,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5da2125/7325cc05abc14e7e82cedfbe9b016a1b/FLAG3f13411bb [2022-03-20 17:45:52,656 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 17:45:52,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-20 17:45:52,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5da2125/7325cc05abc14e7e82cedfbe9b016a1b/FLAG3f13411bb [2022-03-20 17:45:53,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d5da2125/7325cc05abc14e7e82cedfbe9b016a1b [2022-03-20 17:45:53,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 17:45:53,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 17:45:53,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 17:45:53,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 17:45:53,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 17:45:53,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3008290e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53, skipping insertion in model container [2022-03-20 17:45:53,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 17:45:53,125 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 17:45:53,237 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/bubble_sort-2.i[1830,1843] [2022-03-20 17:45:53,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:45:53,313 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 17:45:53,321 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/bubble_sort-2.i[1830,1843] [2022-03-20 17:45:53,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 17:45:53,364 INFO L208 MainTranslator]: Completed translation [2022-03-20 17:45:53,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53 WrapperNode [2022-03-20 17:45:53,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 17:45:53,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 17:45:53,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 17:45:53,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 17:45:53,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 17:45:53,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 17:45:53,412 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 17:45:53,412 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 17:45:53,413 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (1/1) ... [2022-03-20 17:45:53,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 17:45:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 17:45:53,444 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) [2022-03-20 17:45:53,461 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 [2022-03-20 17:45:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 17:45:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 17:45:53,471 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-03-20 17:45:53,472 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-03-20 17:45:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-03-20 17:45:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-03-20 17:45:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-03-20 17:45:53,473 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-03-20 17:45:53,474 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-03-20 17:45:53,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 17:45:53,475 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-03-20 17:45:53,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-20 17:45:53,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 17:45:53,632 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 17:45:53,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 17:45:53,782 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-03-20 17:45:53,970 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 17:45:53,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 17:45:53,976 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-03-20 17:45:53,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:45:53 BoogieIcfgContainer [2022-03-20 17:45:53,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 17:45:53,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 17:45:53,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 17:45:53,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 17:45:53,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 05:45:53" (1/3) ... [2022-03-20 17:45:53,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690e42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:45:53, skipping insertion in model container [2022-03-20 17:45:53,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 05:45:53" (2/3) ... [2022-03-20 17:45:53,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@690e42f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 05:45:53, skipping insertion in model container [2022-03-20 17:45:53,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 05:45:53" (3/3) ... [2022-03-20 17:45:53,983 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2022-03-20 17:45:53,987 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 17:45:53,987 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 17:45:54,015 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 17:45:54,019 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2022-03-20 17:45:54,020 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 17:45:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-20 17:45:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 17:45:54,037 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:45:54,037 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:45:54,038 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:45:54,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:45:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 1 times [2022-03-20 17:45:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:45:54,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [987864522] [2022-03-20 17:45:54,054 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:45:54,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 2 times [2022-03-20 17:45:54,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:45:54,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831867788] [2022-03-20 17:45:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:45:54,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:45:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:45:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:45:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:45:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:45:54,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831867788] [2022-03-20 17:45:54,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831867788] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:45:54,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:45:54,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:45:54,224 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:45:54,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [987864522] [2022-03-20 17:45:54,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [987864522] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:45:54,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:45:54,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 17:45:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428044926] [2022-03-20 17:45:54,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:45:54,229 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 17:45:54,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:45:54,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 17:45:54,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 17:45:54,257 INFO L87 Difference]: Start difference. First operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 17:45:54,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:45:54,667 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-03-20 17:45:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 17:45:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-03-20 17:45:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:45:54,683 INFO L225 Difference]: With dead ends: 331 [2022-03-20 17:45:54,683 INFO L226 Difference]: Without dead ends: 164 [2022-03-20 17:45:54,687 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 17:45:54,690 INFO L913 BasicCegarLoop]: 140 mSDtfsCounter, 255 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 17:45:54,690 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 142 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 17:45:54,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-20 17:45:54,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-03-20 17:45:54,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 117 states have internal predecessors, (121), 32 states have call successors, (32), 13 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 17:45:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-03-20 17:45:54,767 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-03-20 17:45:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:45:54,767 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-03-20 17:45:54,767 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 17:45:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-03-20 17:45:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 17:45:54,769 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:45:54,769 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:45:54,769 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 17:45:54,769 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:45:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:45:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 1 times [2022-03-20 17:45:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:45:54,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [602335279] [2022-03-20 17:45:54,771 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:45:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 2 times [2022-03-20 17:45:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:45:54,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455177749] [2022-03-20 17:45:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:45:54,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:45:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 17:45:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 17:45:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:55,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:45:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 17:45:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 17:45:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 17:45:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 17:45:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 17:45:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455177749] [2022-03-20 17:45:55,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455177749] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:45:55,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:45:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:45:55,121 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 17:45:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [602335279] [2022-03-20 17:45:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [602335279] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 17:45:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 17:45:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 17:45:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256547494] [2022-03-20 17:45:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 17:45:55,124 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 17:45:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 17:45:55,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 17:45:55,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-03-20 17:45:55,125 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:45:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 17:45:55,821 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-03-20 17:45:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 17:45:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-20 17:45:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 17:45:55,847 INFO L225 Difference]: With dead ends: 241 [2022-03-20 17:45:55,848 INFO L226 Difference]: Without dead ends: 236 [2022-03-20 17:45:55,848 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-20 17:45:55,849 INFO L913 BasicCegarLoop]: 127 mSDtfsCounter, 843 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 17:45:55,849 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 134 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 17:45:55,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-20 17:45:55,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-03-20 17:45:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 172 states have internal predecessors, (193), 32 states have call successors, (32), 14 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 17:45:55,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-03-20 17:45:55,883 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-03-20 17:45:55,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 17:45:55,883 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-03-20 17:45:55,884 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 17:45:55,884 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-03-20 17:45:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 17:45:55,884 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 17:45:55,885 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 17:45:55,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 17:45:55,885 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 17:45:55,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 17:45:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 1 times [2022-03-20 17:45:55,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 17:45:55,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [280876311] [2022-03-20 17:45:55,888 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 17:45:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 2 times [2022-03-20 17:45:55,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 17:45:55,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827764384] [2022-03-20 17:45:55,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 17:45:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 17:45:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 17:45:55,994 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 17:45:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 17:45:56,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 17:45:56,071 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-20 17:45:56,071 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 17:45:56,073 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 17:45:56,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 17:45:56,076 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-20 17:45:56,078 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 17:45:56,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 05:45:56 BoogieIcfgContainer [2022-03-20 17:45:56,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 17:45:56,091 INFO L158 Benchmark]: Toolchain (without parser) took 3020.57ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 127.0MB in the beginning and 150.4MB in the end (delta: -23.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-20 17:45:56,092 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:45:56,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.11ms. Allocated memory is still 177.2MB. Free memory was 126.9MB in the beginning and 144.7MB in the end (delta: -17.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-03-20 17:45:56,092 INFO L158 Benchmark]: Boogie Preprocessor took 46.29ms. Allocated memory is still 177.2MB. Free memory was 144.7MB in the beginning and 141.0MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-20 17:45:56,092 INFO L158 Benchmark]: RCFGBuilder took 566.04ms. Allocated memory is still 177.2MB. Free memory was 141.0MB in the beginning and 111.2MB in the end (delta: 29.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-03-20 17:45:56,092 INFO L158 Benchmark]: TraceAbstraction took 2112.07ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 110.6MB in the beginning and 150.4MB in the end (delta: -39.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 17:45:56,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 177.2MB. Free memory is still 144.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 285.11ms. Allocated memory is still 177.2MB. Free memory was 126.9MB in the beginning and 144.7MB in the end (delta: -17.9MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.29ms. Allocated memory is still 177.2MB. Free memory was 144.7MB in the beginning and 141.0MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 566.04ms. Allocated memory is still 177.2MB. Free memory was 141.0MB in the beginning and 111.2MB in the end (delta: 29.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2112.07ms. Allocated memory was 177.2MB in the beginning and 212.9MB in the end (delta: 35.7MB). Free memory was 110.6MB in the beginning and 150.4MB in the end (delta: -39.7MB). There was no memory consumed. 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: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] struct list_head gl_list = {& gl_list, & gl_list}; [L835] struct list_head const *__cil_tmp1 ; [L836] struct list_head const *__cil_tmp2 ; [L839] CALL gl_read() [L676] int tmp ; [L677] int tmp___0 ; [L680] COND TRUE 1 [L683] tmp = __VERIFIER_nondet_int() [L684] CALL gl_insert(tmp) [L622] struct node *node ; [L623] void *tmp ; [L624] unsigned int __cil_tmp4 ; [L625] unsigned int __cil_tmp5 ; [L626] unsigned int __cil_tmp6 ; [L627] struct list_head *__cil_tmp7 ; [L628] unsigned int __cil_tmp8 ; [L629] unsigned int __cil_tmp9 ; [L630] unsigned int __cil_tmp10 ; [L631] unsigned int __cil_tmp11 ; [L632] unsigned int __cil_tmp12 ; [L633] unsigned int __cil_tmp13 ; [L634] unsigned int __cil_tmp14 ; [L635] unsigned int __cil_tmp15 ; [L638] __cil_tmp4 = (unsigned int )20UL [L639] tmp = malloc(__cil_tmp4) [L640] node = (struct node *)tmp [L642] COND FALSE !(! node) [L649] *((int *)node) = value [L650] __cil_tmp5 = (unsigned int )node [L651] __cil_tmp6 = __cil_tmp5 + 4 [L652] __cil_tmp7 = (struct list_head *)__cil_tmp6 [L653] CALL list_add(__cil_tmp7, & gl_list) [L595] struct list_head *__cil_tmp3 ; [L598] EXPR \read(*head) [L598] __cil_tmp3 = *((struct list_head **)head) [L599] CALL __list_add(new, head, __cil_tmp3) [L567] unsigned int __cil_tmp4 ; [L568] unsigned int __cil_tmp5 ; [L569] unsigned int __cil_tmp6 ; [L570] unsigned int __cil_tmp7 ; [L572] __cil_tmp4 = (unsigned int )next [L573] __cil_tmp5 = __cil_tmp4 + 4 [L574] *((struct list_head **)__cil_tmp5) = new [L575] *((struct list_head **)new) = next [L576] __cil_tmp6 = (unsigned int )new [L577] __cil_tmp7 = __cil_tmp6 + 4 [L578] *((struct list_head **)__cil_tmp7) = prev [L579] *((struct list_head **)prev) = new [L599] RET __list_add(new, head, __cil_tmp3) [L653] RET list_add(__cil_tmp7, & gl_list) [L656] COND TRUE 1 [L658] __cil_tmp8 = (unsigned int )node [L659] __cil_tmp9 = __cil_tmp8 + 12 [L660] __cil_tmp10 = (unsigned int )node [L661] __cil_tmp11 = __cil_tmp10 + 12 [L662] *((struct list_head **)__cil_tmp9) = (struct list_head *)__cil_tmp11 [L663] __cil_tmp12 = (unsigned int )node [L664] __cil_tmp13 = __cil_tmp12 + 12 [L665] __cil_tmp14 = (unsigned int )node [L666] __cil_tmp15 = __cil_tmp14 + 12 [L667] *((struct list_head **)__cil_tmp13) = (struct list_head *)__cil_tmp15 [L684] RET gl_insert(tmp) [L685] tmp___0 = __VERIFIER_nondet_int() [L687] COND FALSE !(\read(tmp___0)) [L839] RET gl_read() [L840] __cil_tmp1 = (struct list_head const *)(& gl_list) [L841] CALL inspect(__cil_tmp1) [L55] struct node const *node ; [L56] unsigned int __cil_tmp3 ; [L57] struct list_head *__cil_tmp4 ; [L58] unsigned int __cil_tmp5 ; [L59] int __cil_tmp6 ; [L60] unsigned int __cil_tmp7 ; [L61] unsigned int __cil_tmp8 ; [L62] unsigned int __cil_tmp9 ; [L63] struct list_head *__cil_tmp10 ; [L64] unsigned int __cil_tmp11 ; [L65] int __cil_tmp12 ; [L66] unsigned int __cil_tmp13 ; [L67] unsigned int __cil_tmp14 ; [L68] struct list_head *__cil_tmp15 ; [L69] unsigned int __cil_tmp16 ; [L70] struct list_head *__cil_tmp17 ; [L71] unsigned int __cil_tmp18 ; [L72] int __cil_tmp19 ; [L73] unsigned int __cil_tmp20 ; [L74] unsigned int __cil_tmp21 ; [L75] unsigned int __cil_tmp22 ; [L76] struct list_head *__cil_tmp23 ; [L77] unsigned int __cil_tmp24 ; [L78] int __cil_tmp25 ; [L79] struct node *__cil_tmp26 ; [L80] unsigned int __cil_tmp27 ; [L81] unsigned int __cil_tmp28 ; [L82] struct list_head *__cil_tmp29 ; [L83] unsigned long __cil_tmp30 ; [L84] char *__cil_tmp31 ; [L85] char *__cil_tmp32 ; [L86] struct node *__cil_tmp33 ; [L87] unsigned int __cil_tmp34 ; [L88] unsigned int __cil_tmp35 ; [L89] struct list_head const *__cil_tmp36 ; [L90] unsigned int __cil_tmp37 ; [L91] unsigned int __cil_tmp38 ; [L92] unsigned int __cil_tmp39 ; [L93] struct list_head *__cil_tmp40 ; [L94] unsigned int __cil_tmp41 ; [L95] int __cil_tmp42 ; [L96] unsigned int __cil_tmp43 ; [L97] unsigned int __cil_tmp44 ; [L98] struct list_head const *__cil_tmp45 ; [L99] unsigned int __cil_tmp46 ; [L100] unsigned int __cil_tmp47 ; [L101] unsigned int __cil_tmp48 ; [L102] unsigned int __cil_tmp49 ; [L103] struct list_head *__cil_tmp50 ; [L104] unsigned int __cil_tmp51 ; [L105] int __cil_tmp52 ; [L106] unsigned int __cil_tmp53 ; [L107] unsigned int __cil_tmp54 ; [L108] struct list_head const *__cil_tmp55 ; [L109] unsigned int __cil_tmp56 ; [L110] unsigned int __cil_tmp57 ; [L111] unsigned int __cil_tmp58 ; [L112] struct list_head *__cil_tmp59 ; [L113] unsigned int __cil_tmp60 ; [L114] int __cil_tmp61 ; [L115] unsigned int __cil_tmp62 ; [L116] unsigned int __cil_tmp63 ; [L117] struct list_head const *__cil_tmp64 ; [L118] unsigned int __cil_tmp65 ; [L119] unsigned int __cil_tmp66 ; [L120] unsigned int __cil_tmp67 ; [L121] unsigned int __cil_tmp68 ; [L122] struct list_head *__cil_tmp69 ; [L123] unsigned int __cil_tmp70 ; [L124] int __cil_tmp71 ; [L125] struct node const *__cil_tmp72 ; [L126] unsigned int __cil_tmp73 ; [L127] unsigned int __cil_tmp74 ; [L128] int __cil_tmp75 ; [L129] unsigned int __cil_tmp76 ; [L130] unsigned int __cil_tmp77 ; [L131] struct list_head const *__cil_tmp78 ; [L132] struct node const *__cil_tmp79 ; [L133] unsigned int __cil_tmp80 ; [L134] unsigned int __cil_tmp81 ; [L135] int __cil_tmp82 ; [L136] int const *__cil_tmp83 ; [L137] struct node const *__cil_tmp84 ; [L138] unsigned int __cil_tmp85 ; [L139] unsigned int __cil_tmp86 ; [L140] int __cil_tmp87 ; [L141] unsigned int __cil_tmp88 ; [L142] unsigned int __cil_tmp89 ; [L143] struct list_head *__cil_tmp90 ; [L144] unsigned int __cil_tmp91 ; [L145] unsigned int __cil_tmp92 ; [L146] struct list_head *__cil_tmp93 ; [L147] unsigned int __cil_tmp94 ; [L148] unsigned int __cil_tmp95 ; [L149] int __cil_tmp96 ; [L150] unsigned int __cil_tmp97 ; [L151] unsigned int __cil_tmp98 ; [L152] unsigned int __cil_tmp99 ; [L153] struct list_head *__cil_tmp100 ; [L154] struct list_head *__cil_tmp101 ; [L155] unsigned int __cil_tmp102 ; [L156] unsigned int __cil_tmp103 ; [L157] int __cil_tmp104 ; [L158] struct list_head *__cil_tmp105 ; [L159] unsigned int __cil_tmp106 ; [L160] unsigned int __cil_tmp107 ; [L161] unsigned int __cil_tmp108 ; [L162] struct list_head const *__cil_tmp109 ; [L163] unsigned int __cil_tmp110 ; [L164] struct list_head *__cil_tmp111 ; [L165] unsigned int __cil_tmp112 ; [L166] struct node *__cil_tmp113 ; [L167] unsigned int __cil_tmp114 ; [L168] unsigned int __cil_tmp115 ; [L169] struct list_head *__cil_tmp116 ; [L170] unsigned long __cil_tmp117 ; [L171] char *__cil_tmp118 ; [L172] char *__cil_tmp119 ; [L173] struct node *__cil_tmp120 ; [L174] unsigned int __cil_tmp121 ; [L175] int __cil_tmp122 ; [L179] COND TRUE 1 [L181] COND FALSE !(! head) [L192] COND TRUE 1 [L195] __cil_tmp3 = (unsigned int )head [L196] EXPR \read(*head) [L196] __cil_tmp4 = *((struct list_head * const *)head) [L197] __cil_tmp5 = (unsigned int )__cil_tmp4 [L198] __cil_tmp6 = __cil_tmp5 != __cil_tmp3 [L199] COND TRUE ! __cil_tmp6 [L201] CALL fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1112 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1098 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 359 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 711 IncrementalHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 359 mSolverCounterUnsat, 267 mSDtfsCounter, 711 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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! [2022-03-20 17:45:56,108 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...