/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-5d317bd [2022-03-19 07:18:17,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 07:18:17,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 07:18:17,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 07:18:17,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 07:18:17,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 07:18:17,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 07:18:17,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 07:18:17,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 07:18:17,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 07:18:17,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 07:18:17,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 07:18:17,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 07:18:17,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 07:18:17,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 07:18:17,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 07:18:17,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 07:18:17,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 07:18:17,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 07:18:17,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 07:18:17,555 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 07:18:17,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 07:18:17,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 07:18:17,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 07:18:17,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 07:18:17,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 07:18:17,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 07:18:17,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 07:18:17,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 07:18:17,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 07:18:17,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 07:18:17,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 07:18:17,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 07:18:17,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 07:18:17,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 07:18:17,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 07:18:17,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 07:18:17,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 07:18:17,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 07:18:17,579 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 07:18:17,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 07:18:17,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 07:18:17,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 07:18:17,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 07:18:17,580 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 07:18:17,581 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 07:18:17,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 07:18:17,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 07:18:17,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 07:18:17,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 07:18:17,811 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 07:18:17,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-19 07:18:17,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d651ee2de/d4aa4cf1475b4107bdc4af20a693c859/FLAG65f9792e1 [2022-03-19 07:18:18,264 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 07:18:18,264 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-19 07:18:18,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d651ee2de/d4aa4cf1475b4107bdc4af20a693c859/FLAG65f9792e1 [2022-03-19 07:18:18,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d651ee2de/d4aa4cf1475b4107bdc4af20a693c859 [2022-03-19 07:18:18,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 07:18:18,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 07:18:18,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 07:18:18,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 07:18:18,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 07:18:18,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e58af27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18, skipping insertion in model container [2022-03-19 07:18:18,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 07:18:18,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 07:18:18,512 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] [2022-03-19 07:18:18,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 07:18:18,590 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 07:18:18,599 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] [2022-03-19 07:18:18,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 07:18:18,662 INFO L208 MainTranslator]: Completed translation [2022-03-19 07:18:18,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18 WrapperNode [2022-03-19 07:18:18,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 07:18:18,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 07:18:18,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 07:18:18,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 07:18:18,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 07:18:18,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 07:18:18,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 07:18:18,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 07:18:18,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (1/1) ... [2022-03-19 07:18:18,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 07:18:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 07:18:18,751 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) [2022-03-19 07:18:18,752 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 [2022-03-19 07:18:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 07:18:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 07:18:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 07:18:18,775 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-03-19 07:18:18,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 07:18:18,776 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-19 07:18:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-03-19 07:18:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 07:18:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-19 07:18:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 07:18:18,916 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 07:18:18,918 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 07:18:19,103 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-03-19 07:18:19,309 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 07:18:19,314 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 07:18:19,314 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-03-19 07:18:19,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 07:18:19 BoogieIcfgContainer [2022-03-19 07:18:19,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 07:18:19,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 07:18:19,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 07:18:19,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 07:18:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 07:18:18" (1/3) ... [2022-03-19 07:18:19,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2e6709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 07:18:19, skipping insertion in model container [2022-03-19 07:18:19,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 07:18:18" (2/3) ... [2022-03-19 07:18:19,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2e6709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 07:18:19, skipping insertion in model container [2022-03-19 07:18:19,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 07:18:19" (3/3) ... [2022-03-19 07:18:19,325 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2022-03-19 07:18:19,332 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 07:18:19,332 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 07:18:19,371 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 07:18:19,377 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 [2022-03-19 07:18:19,377 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 07:18:19,394 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) [2022-03-19 07:18:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 07:18:19,398 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:18:19,399 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 07:18:19,399 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:18:19,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:18:19,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 1 times [2022-03-19 07:18:19,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:18:19,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1151568217] [2022-03-19 07:18:19,420 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:18:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 2 times [2022-03-19 07:18:19,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:18:19,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585654737] [2022-03-19 07:18:19,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:18:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:18:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:18:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:18:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:19,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:18:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:18:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585654737] [2022-03-19 07:18:19,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585654737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:18:19,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:18:19,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:18:19,625 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:18:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1151568217] [2022-03-19 07:18:19,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1151568217] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:18:19,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:18:19,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 07:18:19,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982184315] [2022-03-19 07:18:19,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:18:19,629 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 07:18:19,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:18:19,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 07:18:19,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 07:18:19,654 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) [2022-03-19 07:18:20,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:18:20,099 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-03-19 07:18:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 07:18:20,101 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 [2022-03-19 07:18:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:18:20,110 INFO L225 Difference]: With dead ends: 331 [2022-03-19 07:18:20,111 INFO L226 Difference]: Without dead ends: 164 [2022-03-19 07:18:20,118 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 07:18:20,121 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 [2022-03-19 07:18:20,123 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] [2022-03-19 07:18:20,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-19 07:18:20,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-03-19 07:18:20,178 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) [2022-03-19 07:18:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-03-19 07:18:20,184 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-03-19 07:18:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:18:20,185 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-03-19 07:18:20,185 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) [2022-03-19 07:18:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-03-19 07:18:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-19 07:18:20,186 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:18:20,186 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] [2022-03-19 07:18:20,187 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 07:18:20,187 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:18:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:18:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 1 times [2022-03-19 07:18:20,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:18:20,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1490723774] [2022-03-19 07:18:20,191 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:18:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 2 times [2022-03-19 07:18:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:18:20,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343925147] [2022-03-19 07:18:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:18:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:18:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 07:18:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 07:18:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:18:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-19 07:18:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-19 07:18:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 07:18:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 07:18:20,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 07:18:20,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343925147] [2022-03-19 07:18:20,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343925147] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:18:20,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:18:20,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 07:18:20,551 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 07:18:20,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1490723774] [2022-03-19 07:18:20,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1490723774] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 07:18:20,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 07:18:20,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-19 07:18:20,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799009747] [2022-03-19 07:18:20,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 07:18:20,553 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-19 07:18:20,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 07:18:20,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-19 07:18:20,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-03-19 07:18:20,554 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) [2022-03-19 07:18:21,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 07:18:21,284 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-03-19 07:18:21,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-19 07:18:21,285 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 [2022-03-19 07:18:21,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 07:18:21,289 INFO L225 Difference]: With dead ends: 241 [2022-03-19 07:18:21,290 INFO L226 Difference]: Without dead ends: 236 [2022-03-19 07:18:21,290 INFO L911 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 [2022-03-19 07:18:21,292 INFO L912 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, 0.6s IncrementalHoareTripleChecker+Time [2022-03-19 07:18:21,293 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 134 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-19 07:18:21,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-19 07:18:21,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-03-19 07:18:21,347 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) [2022-03-19 07:18:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-03-19 07:18:21,348 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-03-19 07:18:21,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 07:18:21,348 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-03-19 07:18:21,348 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) [2022-03-19 07:18:21,348 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-03-19 07:18:21,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-19 07:18:21,349 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 07:18:21,349 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] [2022-03-19 07:18:21,349 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 07:18:21,350 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 07:18:21,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 07:18:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 1 times [2022-03-19 07:18:21,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 07:18:21,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [374113681] [2022-03-19 07:18:21,353 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 07:18:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 2 times [2022-03-19 07:18:21,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 07:18:21,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520974355] [2022-03-19 07:18:21,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 07:18:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 07:18:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 07:18:21,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 07:18:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 07:18:21,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 07:18:21,552 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-19 07:18:21,552 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-19 07:18:21,556 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 07:18:21,557 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 07:18:21,560 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-19 07:18:21,563 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 07:18:21,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 07:18:21 BoogieIcfgContainer [2022-03-19 07:18:21,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 07:18:21,590 INFO L158 Benchmark]: Toolchain (without parser) took 3305.68ms. Allocated memory was 208.7MB in the beginning and 268.4MB in the end (delta: 59.8MB). Free memory was 159.9MB in the beginning and 213.9MB in the end (delta: -54.1MB). Peak memory consumption was 6.5MB. Max. memory is 8.0GB. [2022-03-19 07:18:21,593 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory was 177.0MB in the beginning and 176.8MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 07:18:21,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.92ms. Allocated memory is still 208.7MB. Free memory was 159.6MB in the beginning and 176.9MB in the end (delta: -17.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 07:18:21,594 INFO L158 Benchmark]: Boogie Preprocessor took 54.98ms. Allocated memory is still 208.7MB. Free memory was 176.9MB in the beginning and 172.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-19 07:18:21,594 INFO L158 Benchmark]: RCFGBuilder took 598.37ms. Allocated memory is still 208.7MB. Free memory was 172.7MB in the beginning and 143.2MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2022-03-19 07:18:21,594 INFO L158 Benchmark]: TraceAbstraction took 2269.58ms. Allocated memory was 208.7MB in the beginning and 268.4MB in the end (delta: 59.8MB). Free memory was 142.3MB in the beginning and 213.9MB in the end (delta: -71.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 07:18:21,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 208.7MB. Free memory was 177.0MB in the beginning and 176.8MB in the end (delta: 150.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 366.92ms. Allocated memory is still 208.7MB. Free memory was 159.6MB in the beginning and 176.9MB in the end (delta: -17.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.98ms. Allocated memory is still 208.7MB. Free memory was 176.9MB in the beginning and 172.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 598.37ms. Allocated memory is still 208.7MB. Free memory was 172.7MB in the beginning and 143.2MB in the end (delta: 29.5MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2269.58ms. Allocated memory was 208.7MB in the beginning and 268.4MB in the end (delta: 59.8MB). Free memory was 142.3MB in the beginning and 213.9MB in the end (delta: -71.7MB). 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: 2.2s, 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! [2022-03-19 07:18:21,624 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...