/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-7968f31 [2022-03-18 00:00:07,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:00:07,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:00:07,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 00:00:07,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 00:00:07,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 00:00:07,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 00:00:07,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 00:00:07,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 00:00:07,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 00:00:07,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 00:00:07,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 00:00:07,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 00:00:07,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 00:00:07,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 00:00:07,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 00:00:07,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 00:00:07,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 00:00:07,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 00:00:07,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 00:00:07,957 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 00:00:07,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 00:00:07,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 00:00:07,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 00:00:07,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 00:00:07,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 00:00:07,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:00:07,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:00:07,972 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:00:07,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 00:00:07,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:00:07,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:00:07,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:00:07,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:00:07,986 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:00:07,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:00:07,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:00:07,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:00:07,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:00:07,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:00:07,987 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:00:07,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:00:08,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:00:08,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:00:08,256 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:00:08,257 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:00:08,267 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:00:08,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-18 00:00:08,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c2d2ecc/95fc66d60e7a429fa4f04d50465d72e8/FLAGd7e13f0d5 [2022-03-18 00:00:08,773 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:00:08,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-18 00:00:08,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c2d2ecc/95fc66d60e7a429fa4f04d50465d72e8/FLAGd7e13f0d5 [2022-03-18 00:00:09,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c2d2ecc/95fc66d60e7a429fa4f04d50465d72e8 [2022-03-18 00:00:09,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:00:09,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:00:09,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:00:09,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:00:09,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:00:09,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a650a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09, skipping insertion in model container [2022-03-18 00:00:09,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:00:09,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:00:09,368 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] [2022-03-18 00:00:09,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:00:09,440 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:00:09,451 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] [2022-03-18 00:00:09,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:00:09,512 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:00:09,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09 WrapperNode [2022-03-18 00:00:09,513 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:00:09,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:00:09,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:00:09,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:00:09,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:00:09,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:00:09,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:00:09,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:00:09,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (1/1) ... [2022-03-18 00:00:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:00:09,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:00:09,653 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) [2022-03-18 00:00:09,655 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 [2022-03-18 00:00:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-03-18 00:00:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-03-18 00:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-03-18 00:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-03-18 00:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-03-18 00:00:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:00:09,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-03-18 00:00:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:00:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-18 00:00:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:00:09,868 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:00:09,870 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:00:10,061 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-03-18 00:00:10,260 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:00:10,267 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:00:10,267 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-03-18 00:00:10,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:00:10 BoogieIcfgContainer [2022-03-18 00:00:10,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:00:10,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:00:10,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:00:10,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:00:10,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:00:09" (1/3) ... [2022-03-18 00:00:10,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c650a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:00:10, skipping insertion in model container [2022-03-18 00:00:10,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:00:09" (2/3) ... [2022-03-18 00:00:10,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c650a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:00:10, skipping insertion in model container [2022-03-18 00:00:10,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:00:10" (3/3) ... [2022-03-18 00:00:10,283 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2022-03-18 00:00:10,288 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:00:10,289 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:00:10,329 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:00:10,335 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 [2022-03-18 00:00:10,335 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:00:10,352 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) [2022-03-18 00:00:10,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 00:00:10,360 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:00:10,360 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:00:10,361 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:00:10,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:00:10,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 1 times [2022-03-18 00:00:10,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:00:10,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1722088122] [2022-03-18 00:00:10,384 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:00:10,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 2 times [2022-03-18 00:00:10,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:00:10,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352679984] [2022-03-18 00:00:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:00:10,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:00:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:00:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 00:00:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:10,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:00:10,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:00:10,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352679984] [2022-03-18 00:00:10,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352679984] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:00:10,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:00:10,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 00:00:10,665 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:00:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1722088122] [2022-03-18 00:00:10,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1722088122] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:00:10,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:00:10,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 00:00:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742025937] [2022-03-18 00:00:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:00:10,673 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 00:00:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:00:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 00:00:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 00:00:10,708 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) [2022-03-18 00:00:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:00:11,165 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-03-18 00:00:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 00:00:11,167 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 [2022-03-18 00:00:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:00:11,180 INFO L225 Difference]: With dead ends: 331 [2022-03-18 00:00:11,180 INFO L226 Difference]: Without dead ends: 164 [2022-03-18 00:00:11,189 INFO L911 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 [2022-03-18 00:00:11,193 INFO L912 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 [2022-03-18 00:00:11,195 INFO L913 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] [2022-03-18 00:00:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-18 00:00:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-03-18 00:00:11,288 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) [2022-03-18 00:00:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-03-18 00:00:11,292 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-03-18 00:00:11,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:00:11,292 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-03-18 00:00:11,293 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) [2022-03-18 00:00:11,293 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-03-18 00:00:11,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 00:00:11,295 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:00:11,295 INFO L500 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] [2022-03-18 00:00:11,295 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:00:11,295 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:00:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:00:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 1 times [2022-03-18 00:00:11,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:00:11,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1085421825] [2022-03-18 00:00:11,299 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:00:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 2 times [2022-03-18 00:00:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:00:11,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322734525] [2022-03-18 00:00:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:00:11,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:00:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:00:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 00:00:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 00:00:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 00:00:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 00:00:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:00:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:00:11,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:00:11,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322734525] [2022-03-18 00:00:11,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322734525] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:00:11,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:00:11,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 00:00:11,767 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:00:11,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1085421825] [2022-03-18 00:00:11,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1085421825] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:00:11,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:00:11,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 00:00:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755810983] [2022-03-18 00:00:11,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:00:11,769 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 00:00:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:00:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 00:00:11,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-03-18 00:00:11,771 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) [2022-03-18 00:00:12,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:00:12,673 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-03-18 00:00:12,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 00:00:12,673 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 [2022-03-18 00:00:12,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:00:12,675 INFO L225 Difference]: With dead ends: 241 [2022-03-18 00:00:12,675 INFO L226 Difference]: Without dead ends: 236 [2022-03-18 00:00:12,676 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-18 00:00:12,677 INFO L912 BasicCegarLoop]: 127 mSDtfsCounter, 843 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-03-18 00:00:12,677 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 134 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-18 00:00:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-18 00:00:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-03-18 00:00:12,696 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) [2022-03-18 00:00:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-03-18 00:00:12,697 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-03-18 00:00:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:00:12,697 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-03-18 00:00:12,697 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) [2022-03-18 00:00:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-03-18 00:00:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 00:00:12,698 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:00:12,698 INFO L500 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] [2022-03-18 00:00:12,698 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:00:12,698 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:00:12,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:00:12,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 1 times [2022-03-18 00:00:12,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:00:12,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [18692210] [2022-03-18 00:00:12,699 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:00:12,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 2 times [2022-03-18 00:00:12,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:00:12,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836531179] [2022-03-18 00:00:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:00:12,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:00:12,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 00:00:12,820 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 00:00:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 00:00:12,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 00:00:12,881 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-18 00:00:12,882 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 00:00:12,884 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:00:12,885 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 00:00:12,897 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-18 00:00:12,899 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:00:12,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:00:12 BoogieIcfgContainer [2022-03-18 00:00:12,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:00:12,914 INFO L158 Benchmark]: Toolchain (without parser) took 3779.71ms. Allocated memory was 218.1MB in the beginning and 274.7MB in the end (delta: 56.6MB). Free memory was 168.0MB in the beginning and 224.4MB in the end (delta: -56.5MB). Peak memory consumption was 806.6kB. Max. memory is 8.0GB. [2022-03-18 00:00:12,914 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 218.1MB. Free memory was 185.5MB in the beginning and 185.3MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:00:12,914 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.92ms. Allocated memory is still 218.1MB. Free memory was 167.8MB in the beginning and 186.9MB in the end (delta: -19.0MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. [2022-03-18 00:00:12,915 INFO L158 Benchmark]: Boogie Preprocessor took 81.06ms. Allocated memory is still 218.1MB. Free memory was 186.9MB in the beginning and 183.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-18 00:00:12,915 INFO L158 Benchmark]: RCFGBuilder took 674.42ms. Allocated memory is still 218.1MB. Free memory was 182.8MB in the beginning and 153.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-18 00:00:12,915 INFO L158 Benchmark]: TraceAbstraction took 2638.74ms. Allocated memory was 218.1MB in the beginning and 274.7MB in the end (delta: 56.6MB). Free memory was 153.2MB in the beginning and 224.4MB in the end (delta: -71.3MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:00:12,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 218.1MB. Free memory was 185.5MB in the beginning and 185.3MB in the end (delta: 151.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 374.92ms. Allocated memory is still 218.1MB. Free memory was 167.8MB in the beginning and 186.9MB in the end (delta: -19.0MB). Peak memory consumption was 12.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 81.06ms. Allocated memory is still 218.1MB. Free memory was 186.9MB in the beginning and 183.2MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 674.42ms. Allocated memory is still 218.1MB. Free memory was 182.8MB in the beginning and 153.4MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2638.74ms. Allocated memory was 218.1MB in the beginning and 274.7MB in the end (delta: 56.6MB). Free memory was 153.2MB in the beginning and 224.4MB in the end (delta: -71.3MB). 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: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1112 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1098 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.8s 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! [2022-03-18 00:00:12,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...