/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 18:42:07,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 18:42:07,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 18:42:07,696 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 18:42:07,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 18:42:07,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 18:42:07,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 18:42:07,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 18:42:07,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 18:42:07,718 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 18:42:07,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 18:42:07,720 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 18:42:07,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 18:42:07,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 18:42:07,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 18:42:07,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 18:42:07,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 18:42:07,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 18:42:07,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 18:42:07,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 18:42:07,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 18:42:07,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 18:42:07,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 18:42:07,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 18:42:07,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 18:42:07,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 18:42:07,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 18:42:07,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 18:42:07,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 18:42:07,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 18:42:07,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 18:42:07,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 18:42:07,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 18:42:07,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 18:42:07,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 18:42:07,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 18:42:07,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 18:42:07,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 18:42:07,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 18:42:07,768 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 18:42:07,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 18:42:07,769 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 [2020-08-18 18:42:07,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 18:42:07,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 18:42:07,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 18:42:07,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 18:42:07,809 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 18:42:07,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 18:42:07,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 18:42:07,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 18:42:07,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 18:42:07,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 18:42:07,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 18:42:07,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 18:42:07,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 18:42:07,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 18:42:07,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 18:42:07,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 18:42:07,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 18:42:07,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 18:42:07,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 18:42:07,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 18:42:07,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 18:42:07,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 18:42:07,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 18:42:07,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 18:42:07,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 18:42:07,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 18:42:07,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 18:42:07,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 18:42:07,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 18:42:07,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=LOWLEXORDER; [2020-08-18 18:42:08,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 18:42:08,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 18:42:08,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 18:42:08,144 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 18:42:08,145 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 18:42:08,145 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-08-18 18:42:08,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28ef1a02/f53aacd5b2454c43a05ee9068a82fa8b/FLAG399c4c5d4 [2020-08-18 18:42:08,754 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 18:42:08,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-08-18 18:42:08,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28ef1a02/f53aacd5b2454c43a05ee9068a82fa8b/FLAG399c4c5d4 [2020-08-18 18:42:09,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b28ef1a02/f53aacd5b2454c43a05ee9068a82fa8b [2020-08-18 18:42:09,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 18:42:09,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 18:42:09,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 18:42:09,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 18:42:09,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 18:42:09,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b1e91ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09, skipping insertion in model container [2020-08-18 18:42:09,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 18:42:09,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 18:42:09,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:42:09,658 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 18:42:09,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 18:42:09,804 INFO L208 MainTranslator]: Completed translation [2020-08-18 18:42:09,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09 WrapperNode [2020-08-18 18:42:09,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 18:42:09,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 18:42:09,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 18:42:09,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 18:42:09,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (1/1) ... [2020-08-18 18:42:09,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 18:42:09,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 18:42:09,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 18:42:09,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 18:42:09,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (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 [2020-08-18 18:42:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 18:42:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 18:42:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 18:42:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 18:42:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-08-18 18:42:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-08-18 18:42:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-08-18 18:42:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-18 18:42:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 18:42:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 18:42:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 18:42:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 18:42:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 18:42:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 18:42:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 18:42:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 18:42:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 18:42:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-08-18 18:42:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-08-18 18:42:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 18:42:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 18:42:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 18:42:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 18:42:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 18:42:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 18:42:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 18:42:09,955 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 18:42:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 18:42:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 18:42:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 18:42:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 18:42:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 18:42:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 18:42:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 18:42:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 18:42:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 18:42:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 18:42:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 18:42:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 18:42:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 18:42:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 18:42:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 18:42:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 18:42:10,313 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-18 18:42:10,512 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 18:42:10,512 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-18 18:42:10,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:42:10 BoogieIcfgContainer [2020-08-18 18:42:10,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 18:42:10,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 18:42:10,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 18:42:10,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 18:42:10,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 06:42:09" (1/3) ... [2020-08-18 18:42:10,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4091d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:42:10, skipping insertion in model container [2020-08-18 18:42:10,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 06:42:09" (2/3) ... [2020-08-18 18:42:10,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4091d6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 06:42:10, skipping insertion in model container [2020-08-18 18:42:10,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 06:42:10" (3/3) ... [2020-08-18 18:42:10,526 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-08-18 18:42:10,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 18:42:10,544 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 18:42:10,558 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 18:42:10,582 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 18:42:10,582 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 18:42:10,582 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 18:42:10,583 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 18:42:10,583 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 18:42:10,583 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 18:42:10,583 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 18:42:10,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 18:42:10,602 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 18:42:10,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 18:42:10,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:10,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:10,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:10,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1184417696, now seen corresponding path program 1 times [2020-08-18 18:42:10,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:10,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602556323] [2020-08-18 18:42:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:10,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602556323] [2020-08-18 18:42:10,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:10,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 18:42:10,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453409965] [2020-08-18 18:42:10,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 18:42:10,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:10,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 18:42:10,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:42:10,852 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-18 18:42:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:10,964 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2020-08-18 18:42:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 18:42:10,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-18 18:42:10,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:10,976 INFO L225 Difference]: With dead ends: 46 [2020-08-18 18:42:10,976 INFO L226 Difference]: Without dead ends: 24 [2020-08-18 18:42:10,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 18:42:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-18 18:42:11,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-18 18:42:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 18:42:11,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-18 18:42:11,054 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 15 [2020-08-18 18:42:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:11,055 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-18 18:42:11,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 18:42:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-18 18:42:11,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 18:42:11,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:11,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:11,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 18:42:11,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:11,058 INFO L82 PathProgramCache]: Analyzing trace with hash -218242506, now seen corresponding path program 1 times [2020-08-18 18:42:11,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:11,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151511072] [2020-08-18 18:42:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:11,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151511072] [2020-08-18 18:42:11,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:11,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:42:11,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471147114] [2020-08-18 18:42:11,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:42:11,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:11,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:42:11,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:42:11,232 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-08-18 18:42:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:11,377 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2020-08-18 18:42:11,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:42:11,377 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-18 18:42:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:11,379 INFO L225 Difference]: With dead ends: 48 [2020-08-18 18:42:11,379 INFO L226 Difference]: Without dead ends: 44 [2020-08-18 18:42:11,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:42:11,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-18 18:42:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-08-18 18:42:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 18:42:11,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-08-18 18:42:11,390 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 17 [2020-08-18 18:42:11,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:11,390 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-08-18 18:42:11,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:42:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-08-18 18:42:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 18:42:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:11,392 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:11,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 18:42:11,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash 771025649, now seen corresponding path program 1 times [2020-08-18 18:42:11,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:11,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418041309] [2020-08-18 18:42:11,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:11,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418041309] [2020-08-18 18:42:11,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:11,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:42:11,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700359776] [2020-08-18 18:42:11,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:42:11,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:11,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:42:11,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:42:11,531 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 6 states. [2020-08-18 18:42:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:11,683 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-08-18 18:42:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:42:11,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 18:42:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:11,687 INFO L225 Difference]: With dead ends: 50 [2020-08-18 18:42:11,687 INFO L226 Difference]: Without dead ends: 42 [2020-08-18 18:42:11,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:42:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-18 18:42:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-18 18:42:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-18 18:42:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-08-18 18:42:11,701 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2020-08-18 18:42:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:11,702 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-08-18 18:42:11,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:42:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-08-18 18:42:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 18:42:11,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:11,712 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:11,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 18:42:11,713 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:11,714 INFO L82 PathProgramCache]: Analyzing trace with hash -472715872, now seen corresponding path program 1 times [2020-08-18 18:42:11,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:11,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889720828] [2020-08-18 18:42:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:11,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889720828] [2020-08-18 18:42:11,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:11,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 18:42:11,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771462650] [2020-08-18 18:42:11,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 18:42:11,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:11,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 18:42:11,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 18:42:11,870 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2020-08-18 18:42:11,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:12,000 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2020-08-18 18:42:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 18:42:12,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-18 18:42:12,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:12,002 INFO L225 Difference]: With dead ends: 48 [2020-08-18 18:42:12,002 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 18:42:12,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-18 18:42:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 18:42:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-08-18 18:42:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 18:42:12,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-18 18:42:12,013 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-08-18 18:42:12,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:12,014 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-18 18:42:12,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 18:42:12,014 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-18 18:42:12,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 18:42:12,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:12,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:12,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 18:42:12,016 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:12,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:12,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1962636917, now seen corresponding path program 1 times [2020-08-18 18:42:12,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:12,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988342984] [2020-08-18 18:42:12,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 18:42:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 18:42:12,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 18:42:12,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988342984] [2020-08-18 18:42:12,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 18:42:12,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 18:42:12,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106855333] [2020-08-18 18:42:12,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 18:42:12,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 18:42:12,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 18:42:12,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:42:12,131 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-08-18 18:42:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 18:42:12,195 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-08-18 18:42:12,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 18:42:12,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 18:42:12,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 18:42:12,197 INFO L225 Difference]: With dead ends: 54 [2020-08-18 18:42:12,197 INFO L226 Difference]: Without dead ends: 38 [2020-08-18 18:42:12,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 18:42:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-18 18:42:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-18 18:42:12,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 18:42:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-08-18 18:42:12,204 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 23 [2020-08-18 18:42:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 18:42:12,205 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-08-18 18:42:12,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 18:42:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-08-18 18:42:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 18:42:12,206 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 18:42:12,206 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 18:42:12,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 18:42:12,206 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 18:42:12,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 18:42:12,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1888593434, now seen corresponding path program 1 times [2020-08-18 18:42:12,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 18:42:12,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265942526] [2020-08-18 18:42:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 18:42:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 18:42:12,231 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 18:42:12,231 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 18:42:12,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 18:42:12,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 06:42:12 BoogieIcfgContainer [2020-08-18 18:42:12,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 18:42:12,256 INFO L168 Benchmark]: Toolchain (without parser) took 3139.56 ms. Allocated memory was 141.6 MB in the beginning and 235.9 MB in the end (delta: 94.4 MB). Free memory was 103.0 MB in the beginning and 107.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 90.1 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,257 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.66 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 170.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,259 INFO L168 Benchmark]: Boogie Preprocessor took 69.31 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 167.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,260 INFO L168 Benchmark]: RCFGBuilder took 640.75 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 123.4 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,262 INFO L168 Benchmark]: TraceAbstraction took 1735.60 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 123.4 MB in the beginning and 107.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-08-18 18:42:12,266 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.66 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.8 MB in the beginning and 170.2 MB in the end (delta: -67.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.31 ms. Allocated memory is still 204.5 MB. Free memory was 170.2 MB in the beginning and 167.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 640.75 ms. Allocated memory is still 204.5 MB. Free memory was 167.6 MB in the beginning and 123.4 MB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1735.60 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 123.4 MB in the beginning and 107.3 MB in the end (delta: 16.1 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 73 SDslu, 178 SDs, 0 SdLazy, 288 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, 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, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 4694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 6/6 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...