/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:37:22,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:37:22,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:37:22,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 21:37:22,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 21:37:22,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 21:37:22,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 21:37:22,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 21:37:22,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 21:37:22,520 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 21:37:22,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 21:37:22,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 21:37:22,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:37:22,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:37:22,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:37:22,524 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:37:22,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:37:22,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:37:22,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:37:22,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:37:22,528 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:37:22,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:37:22,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:37:22,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:37:22,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:37:22,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 21:37:22,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 21:37:22,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 21:37:22,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 21:37:22,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 21:37:22,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-18 21:37:22,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:37:22,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:37:22,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:37:22,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 21:37:22,558 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:37:22,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:37:22,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 21:37:22,566 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 21:37:22,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 21:37:22,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 21:37:22,567 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 21:37:22,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:37:22,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:37:22,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:37:22,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:37:22,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:37:22,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:37:22,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:37:22,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 21:37:22,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 21:37:22,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:37:22,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 21:37:22,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 21:37:22,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 21:37:22,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 21:37:22,571 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:37:22,571 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:37:22,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:37:22,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:37:22,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:37:22,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:37:22,795 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:37:22,796 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-18 21:37:22,836 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57053770/8cb72039732c4bc3845aa960a3abaae1/FLAGc2d79fb81 [2022-03-18 21:37:23,206 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:37:23,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-18 21:37:23,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57053770/8cb72039732c4bc3845aa960a3abaae1/FLAGc2d79fb81 [2022-03-18 21:37:23,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57053770/8cb72039732c4bc3845aa960a3abaae1 [2022-03-18 21:37:23,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:37:23,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:37:23,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:37:23,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:37:23,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:37:23,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44eb36b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23, skipping insertion in model container [2022-03-18 21:37:23,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:37:23,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:37:23,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2022-03-18 21:37:23,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:37:23,853 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:37:23,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2022-03-18 21:37:23,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:37:23,948 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:37:23,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23 WrapperNode [2022-03-18 21:37:23,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:37:23,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:37:23,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:37:23,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:37:23,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:23,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:24,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:37:24,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:37:24,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:37:24,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:37:24,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (1/1) ... [2022-03-18 21:37:24,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:37:24,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:37:24,031 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 21:37:24,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 21:37:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:37:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:37:24,058 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:37:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-03-18 21:37:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-03-18 21:37:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-03-18 21:37:24,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-03-18 21:37:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-03-18 21:37:24,060 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-03-18 21:37:24,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:37:24,061 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-18 21:37:24,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-18 21:37:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:37:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-03-18 21:37:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-03-18 21:37:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-18 21:37:24,064 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:37:24,065 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-18 21:37:24,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:37:24,219 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:37:24,220 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:37:24,444 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-03-18 21:37:24,644 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:37:24,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:37:24,652 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-03-18 21:37:24,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:37:24 BoogieIcfgContainer [2022-03-18 21:37:24,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:37:24,655 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:37:24,655 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:37:24,656 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:37:24,658 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:37:24" (1/1) ... [2022-03-18 21:37:24,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:37:24 BasicIcfg [2022-03-18 21:37:24,728 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:37:24,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:37:24,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:37:24,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:37:24,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:37:23" (1/4) ... [2022-03-18 21:37:24,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fe05f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:37:24, skipping insertion in model container [2022-03-18 21:37:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:37:23" (2/4) ... [2022-03-18 21:37:24,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fe05f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:37:24, skipping insertion in model container [2022-03-18 21:37:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:37:24" (3/4) ... [2022-03-18 21:37:24,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53fe05f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:37:24, skipping insertion in model container [2022-03-18 21:37:24,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:37:24" (4/4) ... [2022-03-18 21:37:24,739 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.iqvasr [2022-03-18 21:37:24,744 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:37:24,744 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:37:24,783 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:37:24,793 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-18 21:37:24,793 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:37:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-18 21:37:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 21:37:24,821 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:37:24,821 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:37:24,822 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:37:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:37:24,826 INFO L85 PathProgramCache]: Analyzing trace with hash 626291817, now seen corresponding path program 1 times [2022-03-18 21:37:24,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:37:24,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464687442] [2022-03-18 21:37:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:37:24,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:37:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:37:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:37:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:37:25,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:37:25,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464687442] [2022-03-18 21:37:25,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464687442] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:37:25,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:37:25,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-18 21:37:25,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638434137] [2022-03-18 21:37:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:37:25,014 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-18 21:37:25,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:37:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-18 21:37:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-18 21:37:25,037 INFO L87 Difference]: Start difference. First operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 21:37:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:37:25,330 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-03-18 21:37:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 21:37:25,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-03-18 21:37:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:37:25,339 INFO L225 Difference]: With dead ends: 331 [2022-03-18 21:37:25,339 INFO L226 Difference]: Without dead ends: 164 [2022-03-18 21:37:25,343 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-18 21:37:25,345 INFO L912 BasicCegarLoop]: 140 mSDtfsCounter, 255 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-18 21:37:25,345 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 142 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-18 21:37:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-18 21:37:25,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-03-18 21:37:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 117 states have internal predecessors, (121), 32 states have call successors, (32), 13 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 21:37:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-03-18 21:37:25,382 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-03-18 21:37:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:37:25,382 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-03-18 21:37:25,383 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-18 21:37:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-03-18 21:37:25,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-18 21:37:25,384 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:37:25,384 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:37:25,384 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:37:25,384 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:37:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:37:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1647321823, now seen corresponding path program 1 times [2022-03-18 21:37:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:37:25,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967137599] [2022-03-18 21:37:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:37:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:37:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:37:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 21:37:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:37:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-18 21:37:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-18 21:37:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:37:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:37:25,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:37:25,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967137599] [2022-03-18 21:37:25,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967137599] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:37:25,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:37:25,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 21:37:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187798320] [2022-03-18 21:37:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:37:25,676 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 21:37:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:37:25,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 21:37:25,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-03-18 21:37:25,677 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:37:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:37:26,378 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-03-18 21:37:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-18 21:37:26,379 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-18 21:37:26,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:37:26,381 INFO L225 Difference]: With dead ends: 241 [2022-03-18 21:37:26,381 INFO L226 Difference]: Without dead ends: 236 [2022-03-18 21:37:26,381 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 [2022-03-18 21:37:26,382 INFO L912 BasicCegarLoop]: 127 mSDtfsCounter, 668 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-18 21:37:26,383 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 134 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-18 21:37:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-18 21:37:26,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-03-18 21:37:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 172 states have internal predecessors, (193), 32 states have call successors, (32), 14 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-18 21:37:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-03-18 21:37:26,399 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-03-18 21:37:26,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:37:26,399 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-03-18 21:37:26,399 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-18 21:37:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-03-18 21:37:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-18 21:37:26,400 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:37:26,400 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:37:26,400 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:37:26,400 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:37:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:37:26,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1085880763, now seen corresponding path program 1 times [2022-03-18 21:37:26,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:37:26,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578525981] [2022-03-18 21:37:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:37:26,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:37:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 21:37:26,478 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 21:37:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 21:37:26,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 21:37:26,543 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 21:37:26,543 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:37:26,544 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 21:37:26,546 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-18 21:37:26,549 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:37:26,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:37:26 BasicIcfg [2022-03-18 21:37:26,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:37:26,579 INFO L158 Benchmark]: Toolchain (without parser) took 2983.85ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 117.3MB in the beginning and 188.0MB in the end (delta: -70.6MB). Peak memory consumption was 98.5MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,579 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:37:26,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.83ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 117.2MB in the beginning and 198.0MB in the end (delta: -80.8MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,580 INFO L158 Benchmark]: Boogie Preprocessor took 50.30ms. Allocated memory is still 232.8MB. Free memory was 198.0MB in the beginning and 193.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,580 INFO L158 Benchmark]: RCFGBuilder took 653.21ms. Allocated memory is still 232.8MB. Free memory was 193.8MB in the beginning and 162.9MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,580 INFO L158 Benchmark]: IcfgTransformer took 73.40ms. Allocated memory is still 232.8MB. Free memory was 162.9MB in the beginning and 158.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,580 INFO L158 Benchmark]: TraceAbstraction took 1846.81ms. Allocated memory is still 232.8MB. Free memory was 157.6MB in the beginning and 188.0MB in the end (delta: -30.3MB). Peak memory consumption was 82.9MB. Max. memory is 8.0GB. [2022-03-18 21:37:26,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 177.2MB. Free memory is still 134.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.83ms. Allocated memory was 177.2MB in the beginning and 232.8MB in the end (delta: 55.6MB). Free memory was 117.2MB in the beginning and 198.0MB in the end (delta: -80.8MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 50.30ms. Allocated memory is still 232.8MB. Free memory was 198.0MB in the beginning and 193.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 653.21ms. Allocated memory is still 232.8MB. Free memory was 193.8MB in the beginning and 162.9MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * IcfgTransformer took 73.40ms. Allocated memory is still 232.8MB. Free memory was 162.9MB in the beginning and 158.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1846.81ms. Allocated memory is still 232.8MB. Free memory was 157.6MB in the beginning and 188.0MB in the end (delta: -30.3MB). Peak memory consumption was 82.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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}; VAL [\old(gl_list)=null, \old(gl_list)=null, gl_list={5:0}] [L835] struct list_head const *__cil_tmp1 ; [L836] struct list_head const *__cil_tmp2 ; VAL [gl_list={5:0}] [L839] CALL gl_read() VAL [gl_list={5:0}] [L676] int tmp ; [L677] int tmp___0 ; VAL [gl_list={5:0}] [L680] COND TRUE 1 VAL [gl_list={5:0}] [L683] tmp = __VERIFIER_nondet_int() [L684] CALL gl_insert(tmp) VAL [\old(value)=0, gl_list={5:0}] [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 VAL [\old(value)=0, __cil_tmp4=20, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L642] COND FALSE !(! node) VAL [\old(value)=0, __cil_tmp4=20, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L649] *((int *)node) = value [L650] __cil_tmp5 = (unsigned int )node [L651] __cil_tmp6 = __cil_tmp5 + 4 [L652] __cil_tmp7 = (struct list_head *)__cil_tmp6 VAL [\old(value)=0, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L653] CALL list_add(__cil_tmp7, & gl_list) VAL [gl_list={5:0}, head={5:0}, new={0:5}] [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) VAL [gl_list={5:0}, new={0:5}, next={5:0}, prev={5:0}] [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 VAL [__cil_tmp4=5, __cil_tmp5=9, __cil_tmp6=5, __cil_tmp7=9, gl_list={5:0}, new={0:5}, new={0:5}, next={5:0}, next={5:0}, prev={5:0}, prev={5:0}] [L599] RET __list_add(new, head, __cil_tmp3) VAL [__cil_tmp3={5:0}, gl_list={5:0}, head={5:0}, head={5:0}, new={0:5}, new={0:5}] [L653] RET list_add(__cil_tmp7, & gl_list) VAL [\old(value)=0, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L656] COND TRUE 1 VAL [\old(value)=0, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [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 VAL [\old(value)=0, __cil_tmp10=1, __cil_tmp11=13, __cil_tmp12=1, __cil_tmp13=13, __cil_tmp14=1, __cil_tmp15=13, __cil_tmp4=20, __cil_tmp5=1, __cil_tmp6=5, __cil_tmp7={0:5}, __cil_tmp8=1, __cil_tmp9=13, gl_list={5:0}, node={4294967297:0}, tmp={4294967297:0}, value=0] [L684] RET gl_insert(tmp) VAL [gl_list={5:0}, tmp=0] [L685] tmp___0 = __VERIFIER_nondet_int() [L687] COND FALSE !(\read(tmp___0)) VAL [gl_list={5:0}, tmp=0, tmp___0=0] [L839] RET gl_read() VAL [gl_list={5:0}] [L840] __cil_tmp1 = (struct list_head const *)(& gl_list) VAL [__cil_tmp1={5:0}, gl_list={5:0}] [L841] CALL inspect(__cil_tmp1) VAL [gl_list={5:0}, head={5:0}] [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 ; VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L179] COND TRUE 1 VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L181] COND FALSE !(! head) VAL [gl_list={5:0}, head={5:0}, head={5:0}] [L192] COND TRUE 1 VAL [gl_list={5:0}, head={5:0}, head={5:0}] [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 VAL [__cil_tmp3=5, __cil_tmp4={0:5}, __cil_tmp5=5, __cil_tmp6=0, gl_list={5:0}, head={5:0}, head={5:0}] [L199] COND TRUE ! __cil_tmp6 VAL [__cil_tmp3=5, __cil_tmp4={0:5}, __cil_tmp5=5, __cil_tmp6=0, gl_list={5:0}, head={5:0}, head={5:0}] [L201] CALL fail() VAL [gl_list={5:0}] [L46] reach_error() VAL [gl_list={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 156 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 937 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 923 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 760 IncrementalHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 267 mSDtfsCounter, 760 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-03-18 21:37:26,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...