/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/forester-heap/sll-sorted-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 21:37:18,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 21:37:18,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 21:37:18,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 21:37:18,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 21:37:18,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 21:37:18,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 21:37:18,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 21:37:18,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 21:37:18,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 21:37:18,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 21:37:18,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 21:37:18,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 21:37:18,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 21:37:18,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 21:37:18,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 21:37:18,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 21:37:18,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 21:37:18,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 21:37:18,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 21:37:18,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 21:37:18,847 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 21:37:18,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 21:37:18,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 21:37:18,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 21:37:18,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 21:37:18,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 21:37:18,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 21:37:18,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 21:37:18,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 21:37:18,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 21:37:18,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 21:37:18,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 21:37:18,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 21:37:18,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 21:37:18,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 21:37:18,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 21:37:18,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 21:37:18,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 21:37:18,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 21:37:18,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 21:37:18,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-02 21:37:18,890 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 21:37:18,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 21:37:18,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 21:37:18,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 21:37:18,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 21:37:18,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 21:37:18,891 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-02 21:37:18,891 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-02 21:37:18,892 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-02 21:37:18,892 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-02 21:37:18,894 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-02 21:37:18,894 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-02 21:37:18,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 21:37:18,894 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 21:37:18,895 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 21:37:18,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 21:37:18,896 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 21:37:18,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 21:37:18,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 21:37:18,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 21:37:18,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:37:18,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 21:37:18,897 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-02 21:37:18,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 21:37:18,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 21:37:18,898 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-02 21:37:18,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 21:37:18,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 21:37:18,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-02 21:37:18,898 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-02 21:37:19,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 21:37:19,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 21:37:19,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 21:37:19,139 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 21:37:19,139 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 21:37:19,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-04-02 21:37:20,325 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 21:37:20,538 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 21:37:20,538 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-04-02 21:37:20,555 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69642f5/24044bad92b64b449be36f4cfc81e97f/FLAG821d51eea [2023-04-02 21:37:20,568 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee69642f5/24044bad92b64b449be36f4cfc81e97f [2023-04-02 21:37:20,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 21:37:20,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 21:37:20,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 21:37:20,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 21:37:20,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 21:37:20,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e7a0e32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20, skipping insertion in model container [2023-04-02 21:37:20,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 21:37:20,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 21:37:20,870 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-04-02 21:37:20,874 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-04-02 21:37:20,877 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-04-02 21:37:20,880 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-04-02 21:37:20,880 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-04-02 21:37:20,882 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-04-02 21:37:20,882 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-04-02 21:37:20,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:37:20,900 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 21:37:20,929 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-04-02 21:37:20,930 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-04-02 21:37:20,932 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-04-02 21:37:20,934 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-04-02 21:37:20,935 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-04-02 21:37:20,936 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-04-02 21:37:20,937 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-04-02 21:37:20,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 21:37:20,957 INFO L208 MainTranslator]: Completed translation [2023-04-02 21:37:20,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20 WrapperNode [2023-04-02 21:37:20,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 21:37:20,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 21:37:20,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 21:37:20,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 21:37:20,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:20,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:21,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:21,007 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:21,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:21,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 21:37:21,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 21:37:21,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 21:37:21,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 21:37:21,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (1/1) ... [2023-04-02 21:37:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 21:37:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:37:21,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 21:37:21,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 21:37:21,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 21:37:21,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 21:37:21,095 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 21:37:21,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 21:37:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 21:37:21,095 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 21:37:21,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 21:37:21,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 21:37:21,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 21:37:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 21:37:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 21:37:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 21:37:21,102 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 21:37:21,103 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 21:37:21,104 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 21:37:21,105 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 21:37:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 21:37:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 21:37:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 21:37:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 21:37:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 21:37:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 21:37:21,357 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 21:37:21,359 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 21:37:21,610 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 21:37:21,677 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 21:37:21,678 INFO L302 CfgBuilder]: Removed 20 assume(true) statements. [2023-04-02 21:37:21,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:37:21 BoogieIcfgContainer [2023-04-02 21:37:21,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 21:37:21,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 21:37:21,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 21:37:21,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 21:37:21,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 09:37:20" (1/3) ... [2023-04-02 21:37:21,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b962074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:37:21, skipping insertion in model container [2023-04-02 21:37:21,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 09:37:20" (2/3) ... [2023-04-02 21:37:21,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b962074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 09:37:21, skipping insertion in model container [2023-04-02 21:37:21,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 09:37:21" (3/3) ... [2023-04-02 21:37:21,687 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2023-04-02 21:37:21,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 21:37:21,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-04-02 21:37:21,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 21:37:21,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@359f9fe8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-02 21:37:21,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-04-02 21:37:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 51 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 21:37:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-04-02 21:37:21,772 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:21,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:21,773 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:21,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash -218052347, now seen corresponding path program 1 times [2023-04-02 21:37:21,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:21,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429642729] [2023-04-02 21:37:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:21,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429642729] [2023-04-02 21:37:21,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429642729] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:21,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:21,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-02 21:37:21,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237219820] [2023-04-02 21:37:21,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:21,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-02 21:37:21,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-02 21:37:22,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:37:22,009 INFO L87 Difference]: Start difference. First operand has 56 states, 44 states have (on average 1.8636363636363635) internal successors, (82), 51 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:22,066 INFO L93 Difference]: Finished difference Result 105 states and 163 transitions. [2023-04-02 21:37:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-02 21:37:22,069 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-04-02 21:37:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:22,078 INFO L225 Difference]: With dead ends: 105 [2023-04-02 21:37:22,079 INFO L226 Difference]: Without dead ends: 52 [2023-04-02 21:37:22,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-02 21:37:22,086 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:22,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:37:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-04-02 21:37:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-04-02 21:37:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 48 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-04-02 21:37:22,129 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 9 [2023-04-02 21:37:22,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:22,130 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-04-02 21:37:22,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,131 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-04-02 21:37:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-04-02 21:37:22,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:22,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:22,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 21:37:22,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:22,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:22,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1812222943, now seen corresponding path program 1 times [2023-04-02 21:37:22,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:22,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436484572] [2023-04-02 21:37:22,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:22,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:22,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436484572] [2023-04-02 21:37:22,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436484572] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:22,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:22,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 21:37:22,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090749990] [2023-04-02 21:37:22,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 21:37:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:22,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 21:37:22,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:37:22,251 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:22,310 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2023-04-02 21:37:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 21:37:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-04-02 21:37:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:22,313 INFO L225 Difference]: With dead ends: 100 [2023-04-02 21:37:22,313 INFO L226 Difference]: Without dead ends: 55 [2023-04-02 21:37:22,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 21:37:22,315 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:22,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 73 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 21:37:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-04-02 21:37:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-04-02 21:37:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.25) internal successors, (55), 50 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2023-04-02 21:37:22,327 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 10 [2023-04-02 21:37:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:22,327 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2023-04-02 21:37:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2023-04-02 21:37:22,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-02 21:37:22,328 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:22,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:22,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 21:37:22,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:22,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1089798578, now seen corresponding path program 1 times [2023-04-02 21:37:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118818269] [2023-04-02 21:37:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-04-02 21:37:22,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118818269] [2023-04-02 21:37:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118818269] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 21:37:22,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 21:37:22,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 21:37:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047326177] [2023-04-02 21:37:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 21:37:22,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 21:37:22,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:22,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 21:37:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 21:37:22,503 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:22,611 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2023-04-02 21:37:22,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 21:37:22,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-04-02 21:37:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:22,614 INFO L225 Difference]: With dead ends: 88 [2023-04-02 21:37:22,614 INFO L226 Difference]: Without dead ends: 86 [2023-04-02 21:37:22,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 21:37:22,615 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 120 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:22,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 71 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 21:37:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-04-02 21:37:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 52. [2023-04-02 21:37:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 48 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2023-04-02 21:37:22,623 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 12 [2023-04-02 21:37:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:22,623 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2023-04-02 21:37:22,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:22,623 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2023-04-02 21:37:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 21:37:22,624 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:22,624 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 21:37:22,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:22,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 542966896, now seen corresponding path program 1 times [2023-04-02 21:37:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:22,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799887878] [2023-04-02 21:37:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:23,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799887878] [2023-04-02 21:37:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799887878] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:37:23,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864466832] [2023-04-02 21:37:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:23,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:37:23,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:37:23,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:37:23,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 21:37:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:23,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjunts are in the unsatisfiable core [2023-04-02 21:37:23,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:37:23,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 21:37:23,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 21:37:23,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:23,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 76 [2023-04-02 21:37:23,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:23,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2023-04-02 21:37:23,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:23,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 45 [2023-04-02 21:37:23,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:23,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 62 [2023-04-02 21:37:23,850 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-02 21:37:23,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-04-02 21:37:23,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-04-02 21:37:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:24,012 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:37:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:24,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864466832] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:37:24,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1110417443] [2023-04-02 21:37:24,186 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-04-02 21:37:24,186 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:37:24,189 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:37:24,193 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:37:24,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:37:24,239 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:37:24,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:37:24,560 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:37:25,168 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '775#(and (<= 1 |#StackHeapBarrier|) (not (= main_~x~0.base 0)) (= main_~head~0.offset 0) (or (not (= (select (select |#memory_$Pointer$.offset| main_~x~0.base) 0) 0)) (not (= (select (select |#memory_$Pointer$.base| main_~x~0.base) 0) 0))) (= main_~x~0.offset 0) (<= (+ main_~head~0.base 1) |#StackHeapBarrier|) (not (= 0 (select (select |#memory_int| main_~x~0.base) 4))) (= main_~marked~0 0) (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| main_~x~0.base) 0)) (+ (select (select |#memory_$Pointer$.offset| main_~x~0.base) 0) 4)) 0) (= main_~head~0.base main_~x~0.base) (= |#NULL.offset| 0) (= |#NULL.base| 0))' at error location [2023-04-02 21:37:25,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:37:25,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:37:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 15 [2023-04-02 21:37:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847001588] [2023-04-02 21:37:25,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:37:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 21:37:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 21:37:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-04-02 21:37:25,170 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:28,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-04-02 21:37:28,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:28,913 INFO L93 Difference]: Finished difference Result 245 states and 265 transitions. [2023-04-02 21:37:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 21:37:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-04-02 21:37:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:28,920 INFO L225 Difference]: With dead ends: 245 [2023-04-02 21:37:28,920 INFO L226 Difference]: Without dead ends: 206 [2023-04-02 21:37:28,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2023-04-02 21:37:28,924 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 875 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 54 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:28,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 369 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 265 Invalid, 7 Unknown, 0 Unchecked, 2.9s Time] [2023-04-02 21:37:28,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-04-02 21:37:28,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 64. [2023-04-02 21:37:28,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 60 states have internal predecessors, (67), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:28,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2023-04-02 21:37:28,943 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 18 [2023-04-02 21:37:28,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:28,943 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2023-04-02 21:37:28,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2023-04-02 21:37:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-04-02 21:37:28,944 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:28,944 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:28,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 21:37:29,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:37:29,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:29,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:29,146 INFO L85 PathProgramCache]: Analyzing trace with hash -2068264324, now seen corresponding path program 1 times [2023-04-02 21:37:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268732694] [2023-04-02 21:37:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:29,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268732694] [2023-04-02 21:37:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268732694] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:37:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047274651] [2023-04-02 21:37:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:29,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:37:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:37:29,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:37:29,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 21:37:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:29,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 41 conjunts are in the unsatisfiable core [2023-04-02 21:37:29,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:37:29,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 21:37:29,884 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-02 21:37:29,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-04-02 21:37:29,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:29,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:29,913 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 21:37:29,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2023-04-02 21:37:29,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-04-02 21:37:29,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-02 21:37:29,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:29,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:29,953 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 21:37:29,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2023-04-02 21:37:29,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-04-02 21:37:29,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-04-02 21:37:30,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-04-02 21:37:30,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-02 21:37:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:30,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:37:30,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:30,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 48 [2023-04-02 21:37:30,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:30,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 93 [2023-04-02 21:37:30,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 68 [2023-04-02 21:37:30,304 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:30,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 121 [2023-04-02 21:37:30,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:30,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 75 [2023-04-02 21:37:30,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-04-02 21:37:30,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2023-04-02 21:37:30,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:30,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047274651] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 21:37:30,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1488318858] [2023-04-02 21:37:30,454 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2023-04-02 21:37:30,454 INFO L166 IcfgInterpreter]: Building call graph [2023-04-02 21:37:30,455 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-04-02 21:37:30,455 INFO L176 IcfgInterpreter]: Starting interpretation [2023-04-02 21:37:30,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-04-02 21:37:30,480 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2023-04-02 21:37:30,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2023-04-02 21:37:30,806 INFO L180 IcfgInterpreter]: Interpretation finished [2023-04-02 21:37:31,727 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1355#(and (<= 1 |#StackHeapBarrier|) (= main_~head~0.offset 0) (= main_~x~0.offset (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0)) (<= (+ main_~head~0.base 1) |#StackHeapBarrier|) (= main_~marked~0 0) (not (= main_~head~0.base 0)) (or (not (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0) 0)) (not (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) 0))) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| main_~x~0.base) (+ main_~x~0.offset 4)) 1)) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) main_~x~0.base) (exists ((|v_main_#t~mem7.base_15| Int) (|v_main_#t~mem7.offset_15| Int) (|v_main_#t~mem8_14| Int) (|v_main_#t~mem7.base_14| Int) (|v_main_#t~short9_10| Bool) (|v_main_#t~mem7.offset_14| Int) (|v_main_#t~mem8_15| Int)) (and (or (and (= (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0) 0) (= (select (select |#memory_$Pointer$.base| main_~head~0.base) 0) 0)) |v_main_#t~short9_10|) (or (and (not (= |v_main_#t~mem8_15| 0)) (= |v_main_#t~mem8_15| (select (select |#memory_int| |v_main_#t~mem7.base_15|) (+ |v_main_#t~mem7.offset_15| 4))) (= |v_main_#t~mem7.base_15| (select (select |#memory_$Pointer$.base| main_~head~0.base) 0)) |v_main_#t~short9_10| (= |v_main_#t~mem7.offset_15| (select (select |#memory_$Pointer$.offset| main_~head~0.base) 0))) (and (= |v_main_#t~mem8_14| |v_main_#t~mem8_15|) (= |v_main_#t~mem7.base_15| |v_main_#t~mem7.base_14|) (not |v_main_#t~short9_10|) (= |v_main_#t~mem7.offset_15| |v_main_#t~mem7.offset_14|))))) (= |#NULL.base| 0))' at error location [2023-04-02 21:37:31,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-04-02 21:37:31,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 21:37:31,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-04-02 21:37:31,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260684581] [2023-04-02 21:37:31,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 21:37:31,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 21:37:31,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-02 21:37:31,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 21:37:31,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 21:37:31,730 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 21:37:32,304 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2023-04-02 21:37:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 21:37:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-04-02 21:37:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 21:37:32,307 INFO L225 Difference]: With dead ends: 153 [2023-04-02 21:37:32,307 INFO L226 Difference]: Without dead ends: 151 [2023-04-02 21:37:32,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 21:37:32,309 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 289 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 21:37:32,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 497 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 21:37:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-04-02 21:37:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 68. [2023-04-02 21:37:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2023-04-02 21:37:32,335 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 20 [2023-04-02 21:37:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 21:37:32,335 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2023-04-02 21:37:32,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 21:37:32,335 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2023-04-02 21:37:32,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-04-02 21:37:32,337 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 21:37:32,337 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 21:37:32,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 21:37:32,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:37:32,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-04-02 21:37:32,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 21:37:32,552 INFO L85 PathProgramCache]: Analyzing trace with hash 854887567, now seen corresponding path program 2 times [2023-04-02 21:37:32,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-02 21:37:32,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688416922] [2023-04-02 21:37:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 21:37:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 21:37:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 21:37:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:33,844 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-02 21:37:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688416922] [2023-04-02 21:37:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688416922] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 21:37:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850263197] [2023-04-02 21:37:33,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 21:37:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 21:37:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 21:37:33,849 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 21:37:33,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 21:37:34,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-04-02 21:37:34,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 21:37:34,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 64 conjunts are in the unsatisfiable core [2023-04-02 21:37:34,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 21:37:34,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-04-02 21:37:34,076 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 21:37:34,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 21:37:34,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:34,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-04-02 21:37:34,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 21:37:34,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:34,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-04-02 21:37:34,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:34,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-04-02 21:37:34,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-04-02 21:37:34,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-04-02 21:37:34,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-04-02 21:37:34,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 120 [2023-04-02 21:37:34,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:34,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:34,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 113 [2023-04-02 21:37:34,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 92 [2023-04-02 21:37:34,313 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-04-02 21:37:34,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 107 [2023-04-02 21:37:34,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 21:37:34,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 114 [2023-04-02 21:37:34,355 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-04-02 21:37:34,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2023-04-02 21:37:34,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2023-04-02 21:37:34,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2023-04-02 21:37:34,972 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-04-02 21:37:34,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 30 [2023-04-02 21:37:34,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-04-02 21:37:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 21:37:35,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 21:37:35,453 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:35,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 87 [2023-04-02 21:37:35,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:35,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 103 [2023-04-02 21:37:35,504 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2023-04-02 21:37:35,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 340 treesize of output 299 [2023-04-02 21:37:35,577 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-04-02 21:37:35,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 86 [2023-04-02 21:37:35,608 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:35,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 68 [2023-04-02 21:37:35,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-04-02 21:37:35,838 INFO L321 Elim1Store]: treesize reduction 6, result has 76.0 percent of original size [2023-04-02 21:37:35,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 382 treesize of output 398 [2023-04-02 21:37:35,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-04-02 21:37:35,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-04-02 21:37:35,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2023-04-02 21:37:36,049 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 21:37:36,281 INFO L321 Elim1Store]: treesize reduction 286, result has 45.1 percent of original size [2023-04-02 21:37:36,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1403 treesize of output 1442 [2023-04-02 21:37:36,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 688 treesize of output 672 [2023-04-02 21:37:36,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:36,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 672 treesize of output 659 [2023-04-02 21:37:36,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 638 treesize of output 574 [2023-04-02 21:37:36,416 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 21:37:36,801 INFO L321 Elim1Store]: treesize reduction 44, result has 89.3 percent of original size [2023-04-02 21:37:36,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 1857 treesize of output 1958 [2023-04-02 21:37:36,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 21:37:36,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1026 treesize of output 1048 [2023-04-02 21:37:37,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 867 treesize of output 803 [2023-04-02 21:37:37,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 803 treesize of output 787 [2023-04-02 21:37:37,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 787 treesize of output 785 [2023-04-02 21:40:55,845 WARN L223 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 3113 DAG size of output: 3114 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)