/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-b030c9e [2022-03-20 08:03:06,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 08:03:06,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 08:03:06,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 08:03:06,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 08:03:06,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 08:03:06,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 08:03:06,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 08:03:06,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 08:03:06,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 08:03:06,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 08:03:06,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 08:03:06,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 08:03:06,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 08:03:06,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 08:03:06,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 08:03:06,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 08:03:06,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 08:03:06,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 08:03:06,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 08:03:06,065 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 08:03:06,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 08:03:06,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 08:03:06,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 08:03:06,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 08:03:06,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 08:03:06,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 08:03:06,073 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 08:03:06,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 08:03:06,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 08:03:06,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-03-20 08:03:06,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 08:03:06,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 08:03:06,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 08:03:06,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 08:03:06,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 08:03:06,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 08:03:06,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 08:03:06,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 08:03:06,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 08:03:06,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 08:03:06,107 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 08:03:06,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 08:03:06,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 08:03:06,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 08:03:06,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:06,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 08:03:06,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 08:03:06,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 08:03:06,110 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 08:03:06,111 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 08:03:06,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 08:03:06,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 08:03:06,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 08:03:06,319 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 08:03:06,319 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 08:03:06,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-20 08:03:06,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44fbc65a/9e373708117d4a498c9fdca228be3aad/FLAGc19eb3975 [2022-03-20 08:03:06,763 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 08:03:06,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-03-20 08:03:06,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44fbc65a/9e373708117d4a498c9fdca228be3aad/FLAGc19eb3975 [2022-03-20 08:03:06,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a44fbc65a/9e373708117d4a498c9fdca228be3aad [2022-03-20 08:03:06,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 08:03:06,784 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 08:03:06,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:06,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 08:03:06,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 08:03:06,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:06" (1/1) ... [2022-03-20 08:03:06,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a96793c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:06, skipping insertion in model container [2022-03-20 08:03:06,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 08:03:06" (1/1) ... [2022-03-20 08:03:06,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 08:03:06,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 08:03:06,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2022-03-20 08:03:07,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:07,078 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 08:03:07,086 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i[1830,1843] [2022-03-20 08:03:07,116 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 08:03:07,126 INFO L208 MainTranslator]: Completed translation [2022-03-20 08:03:07,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07 WrapperNode [2022-03-20 08:03:07,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 08:03:07,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 08:03:07,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 08:03:07,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 08:03:07,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 08:03:07,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 08:03:07,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 08:03:07,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 08:03:07,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 08:03:07,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 08:03:07,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 08:03:07,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 08:03:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 08:03:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 08:03:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 08:03:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-03-20 08:03:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-03-20 08:03:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-03-20 08:03:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-03-20 08:03:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-03-20 08:03:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-03-20 08:03:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-03-20 08:03:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-03-20 08:03:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-03-20 08:03:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-03-20 08:03:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-03-20 08:03:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-03-20 08:03:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 08:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 08:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 08:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-03-20 08:03:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 08:03:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-03-20 08:03:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 08:03:07,421 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 08:03:07,424 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 08:03:07,639 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-03-20 08:03:07,792 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 08:03:07,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 08:03:07,798 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-03-20 08:03:07,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:07 BoogieIcfgContainer [2022-03-20 08:03:07,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 08:03:07,800 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 08:03:07,800 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 08:03:07,801 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 08:03:07,803 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:07" (1/1) ... [2022-03-20 08:03:07,805 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 08:03:07,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:07 BasicIcfg [2022-03-20 08:03:07,854 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 08:03:07,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 08:03:07,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 08:03:07,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 08:03:07,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 08:03:06" (1/4) ... [2022-03-20 08:03:07,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f4fc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:07, skipping insertion in model container [2022-03-20 08:03:07,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 08:03:07" (2/4) ... [2022-03-20 08:03:07,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f4fc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 08:03:07, skipping insertion in model container [2022-03-20 08:03:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 08:03:07" (3/4) ... [2022-03-20 08:03:07,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f4fc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:03:07, skipping insertion in model container [2022-03-20 08:03:07,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 08:03:07" (4/4) ... [2022-03-20 08:03:07,860 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.iqvasr [2022-03-20 08:03:07,863 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 08:03:07,863 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 08:03:07,901 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 08:03:07,918 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 [2022-03-20 08:03:07,918 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 08:03:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-03-20 08:03:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 08:03:07,945 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:07,945 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:07,946 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash 626291817, now seen corresponding path program 1 times [2022-03-20 08:03:07,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696098957] [2022-03-20 08:03:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 08:03:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:08,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:08,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696098957] [2022-03-20 08:03:08,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696098957] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:08,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:08,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 08:03:08,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860179981] [2022-03-20 08:03:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:08,144 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 08:03:08,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:08,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 08:03:08,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 08:03:08,170 INFO L87 Difference]: Start difference. First operand has 156 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 127 states have internal predecessors, (179), 33 states have call successors, (33), 14 states have call predecessors, (33), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 08:03:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:08,538 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-03-20 08:03:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 08:03:08,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-03-20 08:03:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:08,552 INFO L225 Difference]: With dead ends: 331 [2022-03-20 08:03:08,552 INFO L226 Difference]: Without dead ends: 164 [2022-03-20 08:03:08,560 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 08:03:08,566 INFO L913 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 [2022-03-20 08:03:08,567 INFO L914 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] [2022-03-20 08:03:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-20 08:03:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-03-20 08:03:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 117 states have internal predecessors, (121), 32 states have call successors, (32), 13 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 08:03:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-03-20 08:03:08,621 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-03-20 08:03:08,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:08,621 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-03-20 08:03:08,622 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-20 08:03:08,622 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-03-20 08:03:08,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 08:03:08,623 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:08,624 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:08,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 08:03:08,625 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:08,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1647321823, now seen corresponding path program 1 times [2022-03-20 08:03:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:08,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122917254] [2022-03-20 08:03:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 08:03:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 08:03:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 08:03:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-03-20 08:03:08,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-03-20 08:03:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 08:03:08,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 08:03:08,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 08:03:08,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122917254] [2022-03-20 08:03:08,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122917254] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 08:03:08,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 08:03:08,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-20 08:03:08,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345693593] [2022-03-20 08:03:08,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 08:03:08,997 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 08:03:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 08:03:08,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 08:03:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-03-20 08:03:08,998 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 08:03:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 08:03:09,674 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-03-20 08:03:09,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 08:03:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2022-03-20 08:03:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 08:03:09,676 INFO L225 Difference]: With dead ends: 241 [2022-03-20 08:03:09,676 INFO L226 Difference]: Without dead ends: 236 [2022-03-20 08:03:09,677 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-03-20 08:03:09,677 INFO L913 BasicCegarLoop]: 127 mSDtfsCounter, 668 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-03-20 08:03:09,678 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 134 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-20 08:03:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-20 08:03:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-03-20 08:03:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 155 states have (on average 1.2451612903225806) internal successors, (193), 172 states have internal predecessors, (193), 32 states have call successors, (32), 14 states have call predecessors, (32), 11 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 08:03:09,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-03-20 08:03:09,702 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-03-20 08:03:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 08:03:09,703 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-03-20 08:03:09,703 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 08:03:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-03-20 08:03:09,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-20 08:03:09,704 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 08:03:09,704 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 08:03:09,704 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 08:03:09,704 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 08:03:09,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 08:03:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1085880763, now seen corresponding path program 1 times [2022-03-20 08:03:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 08:03:09,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948831033] [2022-03-20 08:03:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 08:03:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 08:03:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:03:09,802 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 08:03:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 08:03:09,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 08:03:09,863 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 08:03:09,863 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 08:03:09,864 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 08:03:09,866 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 08:03:09,868 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 08:03:09,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 08:03:09 BasicIcfg [2022-03-20 08:03:09,926 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 08:03:09,926 INFO L158 Benchmark]: Toolchain (without parser) took 3141.63ms. Allocated memory was 176.2MB in the beginning and 285.2MB in the end (delta: 109.1MB). Free memory was 114.1MB in the beginning and 124.0MB in the end (delta: -9.9MB). Peak memory consumption was 100.5MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,926 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 176.2MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 08:03:09,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.50ms. Allocated memory was 176.2MB in the beginning and 285.2MB in the end (delta: 109.1MB). Free memory was 114.0MB in the beginning and 246.8MB in the end (delta: -132.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,927 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 285.2MB. Free memory was 246.8MB in the beginning and 243.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,927 INFO L158 Benchmark]: RCFGBuilder took 615.38ms. Allocated memory is still 285.2MB. Free memory was 243.1MB in the beginning and 212.2MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,928 INFO L158 Benchmark]: IcfgTransformer took 54.03ms. Allocated memory is still 285.2MB. Free memory was 212.2MB in the beginning and 207.5MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,928 INFO L158 Benchmark]: TraceAbstraction took 2070.04ms. Allocated memory is still 285.2MB. Free memory was 206.9MB in the beginning and 124.0MB in the end (delta: 82.9MB). Peak memory consumption was 84.5MB. Max. memory is 8.0GB. [2022-03-20 08:03:09,929 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 176.2MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 347.50ms. Allocated memory was 176.2MB in the beginning and 285.2MB in the end (delta: 109.1MB). Free memory was 114.0MB in the beginning and 246.8MB in the end (delta: -132.8MB). Peak memory consumption was 7.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 285.2MB. Free memory was 246.8MB in the beginning and 243.1MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 615.38ms. Allocated memory is still 285.2MB. Free memory was 243.1MB in the beginning and 212.2MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * IcfgTransformer took 54.03ms. Allocated memory is still 285.2MB. Free memory was 212.2MB in the beginning and 207.5MB in the end (delta: 4.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2070.04ms. Allocated memory is still 285.2MB. Free memory was 206.9MB in the beginning and 124.0MB in the end (delta: 82.9MB). Peak memory consumption was 84.5MB. 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: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s 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! [2022-03-20 08:03:09,968 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...