/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 19:29:54,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 19:29:54,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 19:29:54,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 19:29:54,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 19:29:54,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 19:29:54,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 19:29:54,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 19:29:54,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 19:29:54,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 19:29:54,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 19:29:54,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 19:29:54,215 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 19:29:54,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 19:29:54,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 19:29:54,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 19:29:54,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 19:29:54,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 19:29:54,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 19:29:54,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 19:29:54,222 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 19:29:54,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 19:29:54,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 19:29:54,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 19:29:54,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 19:29:54,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 19:29:54,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 19:29:54,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 19:29:54,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 19:29:54,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 19:29:54,239 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 19:29:54,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 19:29:54,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 19:29:54,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 19:29:54,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 19:29:54,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 19:29:54,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 19:29:54,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 19:29:54,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 19:29:54,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:29:54,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 19:29:54,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 19:29:54,243 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 19:29:54,243 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 19:29:54,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 19:29:54,243 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 19:29:54,243 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 19:29:54,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 19:29:54,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 19:29:54,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 19:29:54,468 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 19:29:54,469 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 19:29:54,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2022-04-06 19:29:54,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3c53d/2300b91e017843c9b40bb68a92b4b08e/FLAG1c41a0fd3 [2022-04-06 19:29:54,925 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 19:29:54,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/bubble_sort-2.i [2022-04-06 19:29:54,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3c53d/2300b91e017843c9b40bb68a92b4b08e/FLAG1c41a0fd3 [2022-04-06 19:29:54,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4d3c53d/2300b91e017843c9b40bb68a92b4b08e [2022-04-06 19:29:54,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 19:29:54,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 19:29:54,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 19:29:54,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 19:29:54,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 19:29:54,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:29:54" (1/1) ... [2022-04-06 19:29:54,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a51006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:54, skipping insertion in model container [2022-04-06 19:29:54,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:29:54" (1/1) ... [2022-04-06 19:29:54,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 19:29:55,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 19:29:55,155 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] [2022-04-06 19:29:55,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:29:55,265 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 19:29:55,279 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] [2022-04-06 19:29:55,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:29:55,318 INFO L208 MainTranslator]: Completed translation [2022-04-06 19:29:55,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55 WrapperNode [2022-04-06 19:29:55,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 19:29:55,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 19:29:55,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 19:29:55,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 19:29:55,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 19:29:55,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 19:29:55,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 19:29:55,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 19:29:55,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (1/1) ... [2022-04-06 19:29:55,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:29:55,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:29:55,390 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) [2022-04-06 19:29:55,408 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 [2022-04-06 19:29:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 19:29:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 19:29:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 19:29:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-04-06 19:29:55,426 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2022-04-06 19:29:55,427 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2022-04-06 19:29:55,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2022-04-06 19:29:55,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2022-04-06 19:29:55,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-04-06 19:29:55,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 19:29:55,578 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 19:29:55,580 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 19:29:55,729 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2022-04-06 19:29:55,878 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 19:29:55,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 19:29:55,884 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2022-04-06 19:29:55,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:29:55 BoogieIcfgContainer [2022-04-06 19:29:55,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 19:29:55,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 19:29:55,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 19:29:55,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 19:29:55,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:29:54" (1/3) ... [2022-04-06 19:29:55,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cd768f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:29:55, skipping insertion in model container [2022-04-06 19:29:55,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:29:55" (2/3) ... [2022-04-06 19:29:55,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55cd768f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:29:55, skipping insertion in model container [2022-04-06 19:29:55,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:29:55" (3/3) ... [2022-04-06 19:29:55,891 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2022-04-06 19:29:55,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 19:29:55,894 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 19:29:55,923 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 19:29:55,928 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-06 19:29:55,928 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 19:29:55,942 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) [2022-04-06 19:29:55,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-04-06 19:29:55,948 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:29:55,949 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:29:55,949 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:29:55,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:29:55,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 1 times [2022-04-06 19:29:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:29:55,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2076063859] [2022-04-06 19:29:55,966 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:29:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1791385099, now seen corresponding path program 2 times [2022-04-06 19:29:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:29:55,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833507790] [2022-04-06 19:29:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:29:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:29:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:29:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:29:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:29:56,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:29:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833507790] [2022-04-06 19:29:56,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833507790] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:29:56,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:29:56,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 19:29:56,159 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:29:56,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2076063859] [2022-04-06 19:29:56,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2076063859] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:29:56,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:29:56,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-06 19:29:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834472620] [2022-04-06 19:29:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:29:56,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-06 19:29:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:29:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-06 19:29:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-06 19:29:56,186 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) [2022-04-06 19:29:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:29:56,526 INFO L93 Difference]: Finished difference Result 331 states and 501 transitions. [2022-04-06 19:29:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-06 19:29:56,528 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 [2022-04-06 19:29:56,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:29:56,535 INFO L225 Difference]: With dead ends: 331 [2022-04-06 19:29:56,535 INFO L226 Difference]: Without dead ends: 164 [2022-04-06 19:29:56,561 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 [2022-04-06 19:29:56,563 INFO L913 BasicCegarLoop]: 140 mSDtfsCounter, 255 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-06 19:29:56,564 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 142 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-06 19:29:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-04-06 19:29:56,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 143. [2022-04-06 19:29:56,600 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) [2022-04-06 19:29:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-04-06 19:29:56,602 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 18 [2022-04-06 19:29:56,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:29:56,602 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-04-06 19:29:56,602 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) [2022-04-06 19:29:56,602 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-04-06 19:29:56,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-06 19:29:56,603 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:29:56,603 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] [2022-04-06 19:29:56,603 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 19:29:56,604 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:29:56,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:29:56,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 1 times [2022-04-06 19:29:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:29:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [545776722] [2022-04-06 19:29:56,605 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:29:56,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2112592059, now seen corresponding path program 2 times [2022-04-06 19:29:56,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:29:56,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660835368] [2022-04-06 19:29:56,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:29:56,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:29:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 19:29:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-06 19:29:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:29:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-04-06 19:29:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-04-06 19:29:56,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 19:29:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 19:29:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 19:29:56,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660835368] [2022-04-06 19:29:56,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660835368] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:29:56,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:29:56,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:29:56,954 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-06 19:29:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [545776722] [2022-04-06 19:29:56,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [545776722] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 19:29:56,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 19:29:56,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-04-06 19:29:56,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817019091] [2022-04-06 19:29:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 19:29:56,956 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-06 19:29:56,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-06 19:29:56,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-06 19:29:56,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-04-06 19:29:56,957 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) [2022-04-06 19:29:57,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 19:29:57,676 INFO L93 Difference]: Finished difference Result 241 states and 289 transitions. [2022-04-06 19:29:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-06 19:29:57,677 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 [2022-04-06 19:29:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 19:29:57,678 INFO L225 Difference]: With dead ends: 241 [2022-04-06 19:29:57,678 INFO L226 Difference]: Without dead ends: 236 [2022-04-06 19:29:57,679 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 [2022-04-06 19:29:57,680 INFO L913 BasicCegarLoop]: 127 mSDtfsCounter, 843 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-04-06 19:29:57,680 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 134 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-04-06 19:29:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-04-06 19:29:57,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 199. [2022-04-06 19:29:57,700 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) [2022-04-06 19:29:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 238 transitions. [2022-04-06 19:29:57,701 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 238 transitions. Word has length 37 [2022-04-06 19:29:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 19:29:57,701 INFO L478 AbstractCegarLoop]: Abstraction has 199 states and 238 transitions. [2022-04-06 19:29:57,702 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) [2022-04-06 19:29:57,702 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 238 transitions. [2022-04-06 19:29:57,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-04-06 19:29:57,702 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:29:57,702 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] [2022-04-06 19:29:57,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 19:29:57,703 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:29:57,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:29:57,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 1 times [2022-04-06 19:29:57,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:29:57,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1158010164] [2022-04-06 19:29:57,704 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:29:57,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1799360915, now seen corresponding path program 2 times [2022-04-06 19:29:57,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:29:57,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15844403] [2022-04-06 19:29:57,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:29:57,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:29:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 19:29:57,770 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 19:29:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 19:29:57,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 19:29:57,820 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-06 19:29:57,820 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 19:29:57,822 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 19:29:57,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-06 19:29:57,825 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-06 19:29:57,827 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 19:29:57,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 07:29:57 BoogieIcfgContainer [2022-04-06 19:29:57,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 19:29:57,840 INFO L158 Benchmark]: Toolchain (without parser) took 2886.07ms. Allocated memory was 206.6MB in the beginning and 261.1MB in the end (delta: 54.5MB). Free memory was 156.1MB in the beginning and 189.3MB in the end (delta: -33.2MB). Peak memory consumption was 22.3MB. Max. memory is 8.0GB. [2022-04-06 19:29:57,840 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 206.6MB. Free memory was 173.3MB in the beginning and 173.1MB in the end (delta: 156.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 19:29:57,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.36ms. Allocated memory is still 206.6MB. Free memory was 155.9MB in the beginning and 176.4MB in the end (delta: -20.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-04-06 19:29:57,841 INFO L158 Benchmark]: Boogie Preprocessor took 46.92ms. Allocated memory is still 206.6MB. Free memory was 176.4MB in the beginning and 172.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-04-06 19:29:57,841 INFO L158 Benchmark]: RCFGBuilder took 518.74ms. Allocated memory is still 206.6MB. Free memory was 172.7MB in the beginning and 142.3MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-04-06 19:29:57,841 INFO L158 Benchmark]: TraceAbstraction took 1952.93ms. Allocated memory was 206.6MB in the beginning and 261.1MB in the end (delta: 54.5MB). Free memory was 141.8MB in the beginning and 189.3MB in the end (delta: -47.5MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. [2022-04-06 19:29:57,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 206.6MB. Free memory was 173.3MB in the beginning and 173.1MB in the end (delta: 156.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 363.36ms. Allocated memory is still 206.6MB. Free memory was 155.9MB in the beginning and 176.4MB in the end (delta: -20.5MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.92ms. Allocated memory is still 206.6MB. Free memory was 176.4MB in the beginning and 172.7MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 518.74ms. Allocated memory is still 206.6MB. Free memory was 172.7MB in the beginning and 142.3MB in the end (delta: 30.4MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1952.93ms. Allocated memory was 206.6MB in the beginning and 261.1MB in the end (delta: 54.5MB). Free memory was 141.8MB in the beginning and 189.3MB in the end (delta: -47.5MB). Peak memory consumption was 8.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 46]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] struct list_head gl_list = {& gl_list, & gl_list}; [L835] struct list_head const *__cil_tmp1 ; [L836] struct list_head const *__cil_tmp2 ; [L839] CALL gl_read() [L676] int tmp ; [L677] int tmp___0 ; [L680] COND TRUE 1 [L683] tmp = __VERIFIER_nondet_int() [L684] CALL gl_insert(tmp) [L622] struct node *node ; [L623] void *tmp ; [L624] unsigned int __cil_tmp4 ; [L625] unsigned int __cil_tmp5 ; [L626] unsigned int __cil_tmp6 ; [L627] struct list_head *__cil_tmp7 ; [L628] unsigned int __cil_tmp8 ; [L629] unsigned int __cil_tmp9 ; [L630] unsigned int __cil_tmp10 ; [L631] unsigned int __cil_tmp11 ; [L632] unsigned int __cil_tmp12 ; [L633] unsigned int __cil_tmp13 ; [L634] unsigned int __cil_tmp14 ; [L635] unsigned int __cil_tmp15 ; [L638] __cil_tmp4 = (unsigned int )20UL [L639] tmp = malloc(__cil_tmp4) [L640] node = (struct node *)tmp [L642] COND FALSE !(! node) [L649] *((int *)node) = value [L650] __cil_tmp5 = (unsigned int )node [L651] __cil_tmp6 = __cil_tmp5 + 4 [L652] __cil_tmp7 = (struct list_head *)__cil_tmp6 [L653] CALL list_add(__cil_tmp7, & gl_list) [L595] struct list_head *__cil_tmp3 ; [L598] EXPR \read(*head) [L598] __cil_tmp3 = *((struct list_head **)head) [L599] CALL __list_add(new, head, __cil_tmp3) [L567] unsigned int __cil_tmp4 ; [L568] unsigned int __cil_tmp5 ; [L569] unsigned int __cil_tmp6 ; [L570] unsigned int __cil_tmp7 ; [L572] __cil_tmp4 = (unsigned int )next [L573] __cil_tmp5 = __cil_tmp4 + 4 [L574] *((struct list_head **)__cil_tmp5) = new [L575] *((struct list_head **)new) = next [L576] __cil_tmp6 = (unsigned int )new [L577] __cil_tmp7 = __cil_tmp6 + 4 [L578] *((struct list_head **)__cil_tmp7) = prev [L579] *((struct list_head **)prev) = new [L599] RET __list_add(new, head, __cil_tmp3) [L653] RET list_add(__cil_tmp7, & gl_list) [L656] COND TRUE 1 [L658] __cil_tmp8 = (unsigned int )node [L659] __cil_tmp9 = __cil_tmp8 + 12 [L660] __cil_tmp10 = (unsigned int )node [L661] __cil_tmp11 = __cil_tmp10 + 12 [L662] *((struct list_head **)__cil_tmp9) = (struct list_head *)__cil_tmp11 [L663] __cil_tmp12 = (unsigned int )node [L664] __cil_tmp13 = __cil_tmp12 + 12 [L665] __cil_tmp14 = (unsigned int )node [L666] __cil_tmp15 = __cil_tmp14 + 12 [L667] *((struct list_head **)__cil_tmp13) = (struct list_head *)__cil_tmp15 [L684] RET gl_insert(tmp) [L685] tmp___0 = __VERIFIER_nondet_int() [L687] COND FALSE !(\read(tmp___0)) [L839] RET gl_read() [L840] __cil_tmp1 = (struct list_head const *)(& gl_list) [L841] CALL inspect(__cil_tmp1) [L55] struct node const *node ; [L56] unsigned int __cil_tmp3 ; [L57] struct list_head *__cil_tmp4 ; [L58] unsigned int __cil_tmp5 ; [L59] int __cil_tmp6 ; [L60] unsigned int __cil_tmp7 ; [L61] unsigned int __cil_tmp8 ; [L62] unsigned int __cil_tmp9 ; [L63] struct list_head *__cil_tmp10 ; [L64] unsigned int __cil_tmp11 ; [L65] int __cil_tmp12 ; [L66] unsigned int __cil_tmp13 ; [L67] unsigned int __cil_tmp14 ; [L68] struct list_head *__cil_tmp15 ; [L69] unsigned int __cil_tmp16 ; [L70] struct list_head *__cil_tmp17 ; [L71] unsigned int __cil_tmp18 ; [L72] int __cil_tmp19 ; [L73] unsigned int __cil_tmp20 ; [L74] unsigned int __cil_tmp21 ; [L75] unsigned int __cil_tmp22 ; [L76] struct list_head *__cil_tmp23 ; [L77] unsigned int __cil_tmp24 ; [L78] int __cil_tmp25 ; [L79] struct node *__cil_tmp26 ; [L80] unsigned int __cil_tmp27 ; [L81] unsigned int __cil_tmp28 ; [L82] struct list_head *__cil_tmp29 ; [L83] unsigned long __cil_tmp30 ; [L84] char *__cil_tmp31 ; [L85] char *__cil_tmp32 ; [L86] struct node *__cil_tmp33 ; [L87] unsigned int __cil_tmp34 ; [L88] unsigned int __cil_tmp35 ; [L89] struct list_head const *__cil_tmp36 ; [L90] unsigned int __cil_tmp37 ; [L91] unsigned int __cil_tmp38 ; [L92] unsigned int __cil_tmp39 ; [L93] struct list_head *__cil_tmp40 ; [L94] unsigned int __cil_tmp41 ; [L95] int __cil_tmp42 ; [L96] unsigned int __cil_tmp43 ; [L97] unsigned int __cil_tmp44 ; [L98] struct list_head const *__cil_tmp45 ; [L99] unsigned int __cil_tmp46 ; [L100] unsigned int __cil_tmp47 ; [L101] unsigned int __cil_tmp48 ; [L102] unsigned int __cil_tmp49 ; [L103] struct list_head *__cil_tmp50 ; [L104] unsigned int __cil_tmp51 ; [L105] int __cil_tmp52 ; [L106] unsigned int __cil_tmp53 ; [L107] unsigned int __cil_tmp54 ; [L108] struct list_head const *__cil_tmp55 ; [L109] unsigned int __cil_tmp56 ; [L110] unsigned int __cil_tmp57 ; [L111] unsigned int __cil_tmp58 ; [L112] struct list_head *__cil_tmp59 ; [L113] unsigned int __cil_tmp60 ; [L114] int __cil_tmp61 ; [L115] unsigned int __cil_tmp62 ; [L116] unsigned int __cil_tmp63 ; [L117] struct list_head const *__cil_tmp64 ; [L118] unsigned int __cil_tmp65 ; [L119] unsigned int __cil_tmp66 ; [L120] unsigned int __cil_tmp67 ; [L121] unsigned int __cil_tmp68 ; [L122] struct list_head *__cil_tmp69 ; [L123] unsigned int __cil_tmp70 ; [L124] int __cil_tmp71 ; [L125] struct node const *__cil_tmp72 ; [L126] unsigned int __cil_tmp73 ; [L127] unsigned int __cil_tmp74 ; [L128] int __cil_tmp75 ; [L129] unsigned int __cil_tmp76 ; [L130] unsigned int __cil_tmp77 ; [L131] struct list_head const *__cil_tmp78 ; [L132] struct node const *__cil_tmp79 ; [L133] unsigned int __cil_tmp80 ; [L134] unsigned int __cil_tmp81 ; [L135] int __cil_tmp82 ; [L136] int const *__cil_tmp83 ; [L137] struct node const *__cil_tmp84 ; [L138] unsigned int __cil_tmp85 ; [L139] unsigned int __cil_tmp86 ; [L140] int __cil_tmp87 ; [L141] unsigned int __cil_tmp88 ; [L142] unsigned int __cil_tmp89 ; [L143] struct list_head *__cil_tmp90 ; [L144] unsigned int __cil_tmp91 ; [L145] unsigned int __cil_tmp92 ; [L146] struct list_head *__cil_tmp93 ; [L147] unsigned int __cil_tmp94 ; [L148] unsigned int __cil_tmp95 ; [L149] int __cil_tmp96 ; [L150] unsigned int __cil_tmp97 ; [L151] unsigned int __cil_tmp98 ; [L152] unsigned int __cil_tmp99 ; [L153] struct list_head *__cil_tmp100 ; [L154] struct list_head *__cil_tmp101 ; [L155] unsigned int __cil_tmp102 ; [L156] unsigned int __cil_tmp103 ; [L157] int __cil_tmp104 ; [L158] struct list_head *__cil_tmp105 ; [L159] unsigned int __cil_tmp106 ; [L160] unsigned int __cil_tmp107 ; [L161] unsigned int __cil_tmp108 ; [L162] struct list_head const *__cil_tmp109 ; [L163] unsigned int __cil_tmp110 ; [L164] struct list_head *__cil_tmp111 ; [L165] unsigned int __cil_tmp112 ; [L166] struct node *__cil_tmp113 ; [L167] unsigned int __cil_tmp114 ; [L168] unsigned int __cil_tmp115 ; [L169] struct list_head *__cil_tmp116 ; [L170] unsigned long __cil_tmp117 ; [L171] char *__cil_tmp118 ; [L172] char *__cil_tmp119 ; [L173] struct node *__cil_tmp120 ; [L174] unsigned int __cil_tmp121 ; [L175] int __cil_tmp122 ; [L179] COND TRUE 1 [L181] COND FALSE !(! head) [L192] COND TRUE 1 [L195] __cil_tmp3 = (unsigned int )head [L196] EXPR \read(*head) [L196] __cil_tmp4 = *((struct list_head * const *)head) [L197] __cil_tmp5 = (unsigned int )__cil_tmp4 [L198] __cil_tmp6 = __cil_tmp5 != __cil_tmp3 [L199] COND TRUE ! __cil_tmp6 [L201] CALL fail() [L46] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1112 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1098 mSDsluCounter, 276 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 359 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 711 IncrementalHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 359 mSolverCounterUnsat, 267 mSDtfsCounter, 711 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-06 19:29:57,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...