/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/loops/bubble_sort-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:22:48,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:22:48,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:22:48,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:22:48,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:22:48,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:22:48,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:22:48,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:22:48,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:22:48,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:22:48,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:22:48,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:22:48,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:22:48,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:22:48,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:22:48,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:22:48,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:22:48,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:22:48,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:22:48,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:22:48,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:22:48,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:22:48,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:22:48,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:22:48,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:22:48,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:22:48,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:22:48,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:22:48,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:22:48,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:22:48,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:22:48,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:22:48,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:22:48,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:22:48,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:22:48,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:22:48,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:22:48,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:22:48,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:22:48,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:22:48,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:22:48,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 20:22:48,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:22:48,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:22:48,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:22:48,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:22:48,927 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:22:48,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:22:48,927 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:22:48,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:22:48,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:22:48,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:22:48,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:22:48,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:22:48,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:22:48,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:22:48,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:22:48,930 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:22:48,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:22:48,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:22:48,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:22:48,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:22:48,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:22:48,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:22:48,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:22:48,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:22:48,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:22:48,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:22:48,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:22:48,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:22:48,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:22:48,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:22:49,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:22:49,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:22:49,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:22:49,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:22:49,382 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:22:49,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/bubble_sort-2.i [2020-10-27 20:22:49,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce90d352/11eaf58bd1a1493db4a55a64cfffb30a/FLAG674ba376c [2020-10-27 20:22:50,103 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:22:50,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/bubble_sort-2.i [2020-10-27 20:22:50,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce90d352/11eaf58bd1a1493db4a55a64cfffb30a/FLAG674ba376c [2020-10-27 20:22:50,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cce90d352/11eaf58bd1a1493db4a55a64cfffb30a [2020-10-27 20:22:50,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:22:50,377 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:22:50,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:22:50,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:22:50,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:22:50,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:50,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdba456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50, skipping insertion in model container [2020-10-27 20:22:50,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:50,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:22:50,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:22:50,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:22:50,838 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:22:50,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:22:50,948 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:22:50,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50 WrapperNode [2020-10-27 20:22:50,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:22:50,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:22:50,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:22:50,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:22:50,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:50,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:50,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:50,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:51,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:51,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:51,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... [2020-10-27 20:22:51,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:22:51,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:22:51,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:22:51,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:22:51,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:22:51,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:22:51,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:22:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:22:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-27 20:22:51,185 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-27 20:22:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-27 20:22:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-10-27 20:22:51,186 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-27 20:22:51,187 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-10-27 20:22:51,187 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-10-27 20:22:51,188 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-10-27 20:22:51,188 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-10-27 20:22:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-10-27 20:22:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-10-27 20:22:51,189 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-10-27 20:22:51,190 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:22:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:22:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:22:51,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:22:51,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-27 20:22:51,192 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-10-27 20:22:51,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:22:51,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:22:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 20:22:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:22:51,844 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint failFINAL: assume true; [2020-10-27 20:22:52,139 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:22:52,139 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-10-27 20:22:52,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:22:52 BoogieIcfgContainer [2020-10-27 20:22:52,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:22:52,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:22:52,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:22:52,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:22:52,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:22:50" (1/3) ... [2020-10-27 20:22:52,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:22:52, skipping insertion in model container [2020-10-27 20:22:52,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:22:50" (2/3) ... [2020-10-27 20:22:52,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f6a9e3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:22:52, skipping insertion in model container [2020-10-27 20:22:52,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:22:52" (3/3) ... [2020-10-27 20:22:52,150 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort-2.i [2020-10-27 20:22:52,162 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:22:52,167 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:22:52,180 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:22:52,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:22:52,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:22:52,207 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:22:52,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:22:52,207 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:22:52,207 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:22:52,207 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:22:52,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:22:52,228 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-10-27 20:22:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 20:22:52,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:22:52,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:22:52,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:22:52,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:22:52,241 INFO L82 PathProgramCache]: Analyzing trace with hash 980649586, now seen corresponding path program 1 times [2020-10-27 20:22:52,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:22:52,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094645493] [2020-10-27 20:22:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:22:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:52,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:52,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:52,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:22:52,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:22:52,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-27 20:22:52,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:52,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 20:22:52,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:22:52,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:22:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:52,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:52,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:22:52,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 20:22:52,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:22:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:22:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:53,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:53,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:22:53,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:53,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:22:53,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 20:22:53,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:22:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:22:53,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094645493] [2020-10-27 20:22:53,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:22:53,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:22:53,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629213602] [2020-10-27 20:22:53,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:22:53,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:22:53,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:22:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:22:53,066 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2020-10-27 20:22:53,214 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2020-10-27 20:22:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:22:53,836 INFO L93 Difference]: Finished difference Result 338 states and 511 transitions. [2020-10-27 20:22:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:22:53,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 20:22:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:22:53,850 INFO L225 Difference]: With dead ends: 338 [2020-10-27 20:22:53,851 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 20:22:53,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:22:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 20:22:53,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 145. [2020-10-27 20:22:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-27 20:22:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 168 transitions. [2020-10-27 20:22:53,929 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 168 transitions. Word has length 20 [2020-10-27 20:22:53,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:22:53,930 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 168 transitions. [2020-10-27 20:22:53,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:22:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 168 transitions. [2020-10-27 20:22:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 20:22:53,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:22:53,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:22:53,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:22:53,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:22:53,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:22:53,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1813175720, now seen corresponding path program 1 times [2020-10-27 20:22:53,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:22:53,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744831040] [2020-10-27 20:22:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:22:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:54,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:22:54,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:54,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-10-27 20:22:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:22:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 20:22:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 20:22:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:54,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:22:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:54,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:54,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:22:54,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:54,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 20:22:54,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:22:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:54,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 20:22:54,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:54,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:22:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 20:22:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 20:22:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:22:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:55,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:55,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 20:22:55,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 20:22:55,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:55,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 20:22:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:55,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:55,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:55,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 20:22:55,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 20:22:55,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:55,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:22:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:22:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:22:55,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:22:55,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:22:55,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:22:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:22:55,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:22:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:22:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:22:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:22:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:22:55,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:22:55,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744831040] [2020-10-27 20:22:55,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:22:55,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 20:22:55,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015820749] [2020-10-27 20:22:55,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 20:22:55,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:22:55,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 20:22:55,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:22:55,277 INFO L87 Difference]: Start difference. First operand 145 states and 168 transitions. Second operand 9 states. [2020-10-27 20:22:56,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:22:56,767 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2020-10-27 20:22:56,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:22:56,768 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-27 20:22:56,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:22:56,771 INFO L225 Difference]: With dead ends: 245 [2020-10-27 20:22:56,771 INFO L226 Difference]: Without dead ends: 238 [2020-10-27 20:22:56,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-27 20:22:56,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-27 20:22:56,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 201. [2020-10-27 20:22:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-10-27 20:22:56,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 240 transitions. [2020-10-27 20:22:56,810 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 240 transitions. Word has length 39 [2020-10-27 20:22:56,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:22:56,811 INFO L481 AbstractCegarLoop]: Abstraction has 201 states and 240 transitions. [2020-10-27 20:22:56,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 20:22:56,811 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 240 transitions. [2020-10-27 20:22:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:22:56,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:22:56,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:22:56,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:22:56,813 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:22:56,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:22:56,814 INFO L82 PathProgramCache]: Analyzing trace with hash -445551942, now seen corresponding path program 1 times [2020-10-27 20:22:56,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:22:56,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726310163] [2020-10-27 20:22:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:22:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:22:56,938 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:22:56,938 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:22:56,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:22:56,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:22:56 BoogieIcfgContainer [2020-10-27 20:22:56,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:22:56,973 INFO L168 Benchmark]: Toolchain (without parser) took 6600.98 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 125.4 MB in the beginning and 142.3 MB in the end (delta: -16.9 MB). Peak memory consumption was 62.5 MB. Max. memory is 8.0 GB. [2020-10-27 20:22:56,973 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 151.0 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:22:56,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 106.0 MB in the end (delta: 18.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-27 20:22:56,975 INFO L168 Benchmark]: Boogie Preprocessor took 142.27 ms. Allocated memory is still 151.0 MB. Free memory was 105.8 MB in the beginning and 101.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:22:56,977 INFO L168 Benchmark]: RCFGBuilder took 1048.50 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:22:56,978 INFO L168 Benchmark]: TraceAbstraction took 4826.97 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 92.0 MB in the beginning and 142.3 MB in the end (delta: -50.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 20:22:56,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 151.0 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 568.54 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 106.0 MB in the end (delta: 18.7 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 142.27 ms. Allocated memory is still 151.0 MB. Free memory was 105.8 MB in the beginning and 101.9 MB in the end (delta: 3.9 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1048.50 ms. Allocated memory is still 151.0 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4826.97 ms. Allocated memory was 151.0 MB in the beginning and 229.6 MB in the end (delta: 78.6 MB). Free memory was 92.0 MB in the beginning and 142.3 MB in the end (delta: -50.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "bubble_sort-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 16 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 SDtfs, 1073 SDslu, 160 SDs, 0 SdLazy, 609 SolverSat, 345 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 58 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 7068 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! Received shutdown request...