/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:44,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:44,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:44,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 02:20:44,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 02:20:44,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 02:20:44,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 02:20:44,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 02:20:44,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 02:20:44,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 02:20:44,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 02:20:44,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 02:20:44,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:44,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:44,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:44,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:44,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:44,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:44,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:44,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:44,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:44,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:44,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:44,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:44,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 02:20:44,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 02:20:44,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 02:20:44,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 02:20:44,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 02:20:44,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 02:20:44,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 02:20:44,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 02:20:44,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 02:20:44,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 02:20:44,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 02:20:44,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 02:20:44,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 02:20:44,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 02:20:44,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:44,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:44,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:44,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:20:44,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:44,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:44,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:44,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:44,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:44,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:44,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:44,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:44,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:44,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:44,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:44,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:44,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:44,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:44,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:44,160 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:44,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:44,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:44,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:44,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:44,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:44,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:44,162 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:44,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:44,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:44,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:44,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:44,634 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:44,635 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:44,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2021-02-22 02:20:44,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ca6657f/0e78a6318123454aa39d82ca21248120/FLAG3da3efa15 [2021-02-22 02:20:45,491 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:45,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2021-02-22 02:20:45,506 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ca6657f/0e78a6318123454aa39d82ca21248120/FLAG3da3efa15 [2021-02-22 02:20:45,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ca6657f/0e78a6318123454aa39d82ca21248120 [2021-02-22 02:20:45,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:45,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:45,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:45,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:45,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:45,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:45" (1/1) ... [2021-02-22 02:20:45,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5492c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:45, skipping insertion in model container [2021-02-22 02:20:45,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:45" (1/1) ... [2021-02-22 02:20:45,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:45,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:46,163 WARN L226 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] [2021-02-22 02:20:46,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:46,345 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:46,360 WARN L226 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] [2021-02-22 02:20:46,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:46,457 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:46,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46 WrapperNode [2021-02-22 02:20:46,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:46,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:46,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:46,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:46,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... [2021-02-22 02:20:46,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:46,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:46,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:46,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:46,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2021-02-22 02:20:46,770 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2021-02-22 02:20:46,771 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2021-02-22 02:20:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2021-02-22 02:20:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2021-02-22 02:20:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2021-02-22 02:20:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2021-02-22 02:20:46,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:46,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:46,773 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-22 02:20:46,774 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:46,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2021-02-22 02:20:46,776 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2021-02-22 02:20:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-22 02:20:46,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:47,412 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2021-02-22 02:20:47,981 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:47,981 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-02-22 02:20:47,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:47 BoogieIcfgContainer [2021-02-22 02:20:47,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:47,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:47,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:47,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:47,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:45" (1/3) ... [2021-02-22 02:20:47,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33df0822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:47, skipping insertion in model container [2021-02-22 02:20:47,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:46" (2/3) ... [2021-02-22 02:20:47,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33df0822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:47, skipping insertion in model container [2021-02-22 02:20:47,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:47" (3/3) ... [2021-02-22 02:20:47,999 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2021-02-22 02:20:48,007 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:48,013 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:48,034 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:48,077 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:48,077 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:48,078 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:48,078 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:48,078 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:48,078 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:48,078 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:48,079 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states. [2021-02-22 02:20:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-02-22 02:20:48,147 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:48,148 INFO L422 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, 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, 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, 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] [2021-02-22 02:20:48,149 INFO L428 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1330261824, now seen corresponding path program 1 times [2021-02-22 02:20:48,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:48,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428417943] [2021-02-22 02:20:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:48,265 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:48,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:48,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:48,515 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:48,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:48,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:48,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:48,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 02:20:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:48,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:48,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:48,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:48,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:48,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428417943] [2021-02-22 02:20:48,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:48,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:20:48,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644655159] [2021-02-22 02:20:48,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:20:48,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:48,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:20:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:20:48,760 INFO L87 Difference]: Start difference. First operand 580 states. Second operand 4 states. [2021-02-22 02:20:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:49,681 INFO L93 Difference]: Finished difference Result 1195 states and 1365 transitions. [2021-02-22 02:20:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-22 02:20:49,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2021-02-22 02:20:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:49,711 INFO L225 Difference]: With dead ends: 1195 [2021-02-22 02:20:49,711 INFO L226 Difference]: Without dead ends: 569 [2021-02-22 02:20:49,721 INFO L677 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 [2021-02-22 02:20:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2021-02-22 02:20:49,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 533. [2021-02-22 02:20:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2021-02-22 02:20:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 556 transitions. [2021-02-22 02:20:49,919 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 556 transitions. Word has length 154 [2021-02-22 02:20:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:49,919 INFO L480 AbstractCegarLoop]: Abstraction has 533 states and 556 transitions. [2021-02-22 02:20:49,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:20:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 556 transitions. [2021-02-22 02:20:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-02-22 02:20:49,924 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:49,925 INFO L422 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, 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, 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, 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, 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, 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] [2021-02-22 02:20:49,925 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:49,925 INFO L428 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:49,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:49,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1540716547, now seen corresponding path program 1 times [2021-02-22 02:20:49,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:49,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532067159] [2021-02-22 02:20:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:49,930 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,191 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:50,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:50,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:50,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:50,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:20:50,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-22 02:20:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,434 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-22 02:20:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:20:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-22 02:20:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:50,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:50,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:20:50,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532067159] [2021-02-22 02:20:50,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:50,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:20:50,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853064798] [2021-02-22 02:20:50,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:20:50,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:50,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:20:50,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:20:50,672 INFO L87 Difference]: Start difference. First operand 533 states and 556 transitions. Second operand 9 states. [2021-02-22 02:20:53,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:53,948 INFO L93 Difference]: Finished difference Result 902 states and 950 transitions. [2021-02-22 02:20:53,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-22 02:20:53,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2021-02-22 02:20:53,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:53,956 INFO L225 Difference]: With dead ends: 902 [2021-02-22 02:20:53,956 INFO L226 Difference]: Without dead ends: 897 [2021-02-22 02:20:53,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-02-22 02:20:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2021-02-22 02:20:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 845. [2021-02-22 02:20:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 845 states. [2021-02-22 02:20:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 884 transitions. [2021-02-22 02:20:54,108 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 884 transitions. Word has length 226 [2021-02-22 02:20:54,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:54,110 INFO L480 AbstractCegarLoop]: Abstraction has 845 states and 884 transitions. [2021-02-22 02:20:54,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:20:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 884 transitions. [2021-02-22 02:20:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-02-22 02:20:54,113 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:54,114 INFO L422 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, 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, 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, 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, 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, 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] [2021-02-22 02:20:54,114 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:54,114 INFO L428 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:54,115 INFO L82 PathProgramCache]: Analyzing trace with hash 684340709, now seen corresponding path program 1 times [2021-02-22 02:20:54,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:54,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184648102] [2021-02-22 02:20:54,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:54,119 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:54,240 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:54,330 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:54,475 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:54,476 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:54,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:54,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:54 BoogieIcfgContainer [2021-02-22 02:20:54,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:54,535 INFO L168 Benchmark]: Toolchain (without parser) took 8725.92 ms. Allocated memory was 151.0 MB in the beginning and 234.9 MB in the end (delta: 83.9 MB). Free memory was 126.2 MB in the beginning and 102.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 108.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:54,537 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.8 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:54,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 106.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:54,540 INFO L168 Benchmark]: Boogie Preprocessor took 188.04 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 133.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:54,545 INFO L168 Benchmark]: RCFGBuilder took 1338.72 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 94.0 MB in the end (delta: 39.0 MB). Peak memory consumption was 65.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:54,546 INFO L168 Benchmark]: TraceAbstraction took 6545.19 ms. Allocated memory was 151.0 MB in the beginning and 234.9 MB in the end (delta: 83.9 MB). Free memory was 93.4 MB in the beginning and 102.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 75.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:54,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.8 MB in the beginning and 124.8 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 632.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 106.3 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 188.04 ms. Allocated memory is still 151.0 MB. Free memory was 106.3 MB in the beginning and 133.0 MB in the end (delta: -26.7 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1338.72 ms. Allocated memory is still 151.0 MB. Free memory was 133.0 MB in the beginning and 94.0 MB in the end (delta: 39.0 MB). Peak memory consumption was 65.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6545.19 ms. Allocated memory was 151.0 MB in the beginning and 234.9 MB in the end (delta: 83.9 MB). Free memory was 93.4 MB in the beginning and 102.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 75.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 586 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1065 SDtfs, 4640 SDslu, 241 SDs, 0 SdLazy, 1926 SolverSat, 335 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=845occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 2 MinimizatonAttempts, 88 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! Received shutdown request...