/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/list-simple/dll2c_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:02:52,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:02:52,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:02:52,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:02:52,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:02:52,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:02:52,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:02:52,930 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:02:52,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:02:52,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:02:52,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:02:52,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:02:52,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:02:52,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:02:52,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:02:52,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:02:52,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:02:52,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:02:52,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:02:52,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:02:52,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:02:52,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:02:52,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:02:52,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:02:52,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 01:02:52,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 01:02:52,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 01:02:52,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 01:02:52,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 01:02:52,961 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 01:02:52,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:02:52,962 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:02:52,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:02:52,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:02:52,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:02:52,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:02:52,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:02:52,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:02:52,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:02:52,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:02:52,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:02:52,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-02 01:02:52,993 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:02:52,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:02:52,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:02:52,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:02:52,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:02:52,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:02:52,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:02:52,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:02:52,995 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:02:52,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:02:52,996 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:02:52,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:52,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:02:52,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:02:52,998 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:02:53,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:02:53,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:02:53,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:02:53,220 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:02:53,221 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:02:53,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_append_equal.i [2023-04-02 01:02:54,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:02:54,414 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:02:54,415 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_append_equal.i [2023-04-02 01:02:54,422 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b80b310/e09488ad74d74c5d961c1702b4591bb3/FLAG9cc6784df [2023-04-02 01:02:54,432 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4b80b310/e09488ad74d74c5d961c1702b4591bb3 [2023-04-02 01:02:54,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:02:54,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:02:54,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:54,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:02:54,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:02:54,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444ba017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54, skipping insertion in model container [2023-04-02 01:02:54,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,446 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:02:54,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:02:54,743 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/list-simple/dll2c_append_equal.i[24585,24598] [2023-04-02 01:02:54,747 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:54,756 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:02:54,796 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/list-simple/dll2c_append_equal.i[24585,24598] [2023-04-02 01:02:54,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:54,816 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:02:54,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54 WrapperNode [2023-04-02 01:02:54,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:54,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:02:54,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:02:54,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:02:54,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:02:54,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:02:54,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:02:54,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:02:54,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (1/1) ... [2023-04-02 01:02:54,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:54,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:54,918 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 01:02:54,944 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 01:02:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:02:54,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:02:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:02:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:02:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_append [2023-04-02 01:02:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:02:54,953 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:02:54,954 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:02:54,955 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:02:54,956 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:02:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:02:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:02:54,957 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:02:54,958 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:02:54,959 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 01:02:54,960 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:02:54,961 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:02:54,962 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:02:54,963 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:02:54,964 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-02 01:02:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-04-02 01:02:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:02:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:02:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:02:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2023-04-02 01:02:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2023-04-02 01:02:54,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:02:54,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_append [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:02:54,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:02:55,198 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:02:55,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:02:55,272 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-02 01:02:55,442 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:02:55,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:02:55,449 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 01:02:55,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:55 BoogieIcfgContainer [2023-04-02 01:02:55,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:02:55,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:02:55,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:02:55,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:02:55,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:02:54" (1/3) ... [2023-04-02 01:02:55,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df0188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:55, skipping insertion in model container [2023-04-02 01:02:55,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:54" (2/3) ... [2023-04-02 01:02:55,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35df0188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:55, skipping insertion in model container [2023-04-02 01:02:55,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:55" (3/3) ... [2023-04-02 01:02:55,456 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_append_equal.i [2023-04-02 01:02:55,468 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:02:55,468 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:02:55,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:02:55,544 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=PETRI_NET, 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;@56ea20d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:02:55,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:02:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 38 states have internal predecessors, (50), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-04-02 01:02:55,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-02 01:02:55,555 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:55,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:55,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:55,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:55,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1210465109, now seen corresponding path program 1 times [2023-04-02 01:02:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:55,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192188679] [2023-04-02 01:02:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:55,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:55,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 01:02:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 01:02:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:56,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192188679] [2023-04-02 01:02:56,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192188679] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:56,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:02:56,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851460129] [2023-04-02 01:02:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:02:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:02:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:56,152 INFO L87 Difference]: Start difference. First operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 38 states have internal predecessors, (50), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 01:02:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:56,516 INFO L93 Difference]: Finished difference Result 105 states and 133 transitions. [2023-04-02 01:02:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:02:56,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-04-02 01:02:56,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:56,525 INFO L225 Difference]: With dead ends: 105 [2023-04-02 01:02:56,526 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 01:02:56,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:02:56,531 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 88 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:56,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 16 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:02:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 01:02:56,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-04-02 01:02:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-04-02 01:02:56,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-04-02 01:02:56,570 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2023-04-02 01:02:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:56,571 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-04-02 01:02:56,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-04-02 01:02:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-04-02 01:02:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:02:56,574 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:56,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:56,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:02:56,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:56,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash -595821142, now seen corresponding path program 1 times [2023-04-02 01:02:56,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:56,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721117391] [2023-04-02 01:02:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:56,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:02:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:02:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 01:02:57,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:57,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721117391] [2023-04-02 01:02:57,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721117391] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:57,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764534183] [2023-04-02 01:02:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:57,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:57,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:57,548 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 01:02:57,550 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 01:02:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:57,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 42 conjunts are in the unsatisfiable core [2023-04-02 01:02:57,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:02:58,016 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 17 treesize of output 9 [2023-04-02 01:02:58,215 WARN L861 $PredicateComparison]: unable to prove that (exists ((dll_circular_append_~new_last~0.base Int) (v_ArrVal_521 (Array Int Int))) (and (<= (+ dll_circular_append_~new_last~0.base 1) |c_#StackHeapBarrier|) (= |c_dll_circular_append_#t~mem10.base| (select (select (store |c_old(#memory_$Pointer$.base)| dll_circular_append_~new_last~0.base v_ArrVal_521) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|)))) is different from true [2023-04-02 01:02:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:02:58,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:02:58,372 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_dll_circular_append_~new_last~0.base_6 Int) (v_ArrVal_527 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_dll_circular_append_~new_last~0.base_6 v_ArrVal_527) |c_main_~#s~0.base|) |c_main_~#s~0.offset|) 0)) (<= |c_#StackHeapBarrier| v_dll_circular_append_~new_last~0.base_6))) is different from false [2023-04-02 01:02:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764534183] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:02:58,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-04-02 01:02:58,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 28 [2023-04-02 01:02:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410831376] [2023-04-02 01:02:58,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-04-02 01:02:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 01:02:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 01:02:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=8, NotChecked=102, Total=812 [2023-04-02 01:02:58,382 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 28 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 01:02:59,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:59,336 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2023-04-02 01:02:59,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 01:02:59,336 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 46 [2023-04-02 01:02:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:59,337 INFO L225 Difference]: With dead ends: 75 [2023-04-02 01:02:59,337 INFO L226 Difference]: Without dead ends: 44 [2023-04-02 01:02:59,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=1695, Unknown=8, NotChecked=170, Total=2070 [2023-04-02 01:02:59,339 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:59,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 809 Invalid, 0 Unknown, 51 Unchecked, 0.6s Time] [2023-04-02 01:02:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-04-02 01:02:59,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2023-04-02 01:02:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-04-02 01:02:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-04-02 01:02:59,346 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 46 [2023-04-02 01:02:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:59,347 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-04-02 01:02:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 2.090909090909091) internal successors, (46), 20 states have internal predecessors, (46), 7 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-04-02 01:02:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-04-02 01:02:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:02:59,348 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:59,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:59,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 01:02:59,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:02:59,555 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:59,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1179186220, now seen corresponding path program 1 times [2023-04-02 01:02:59,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:59,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639018946] [2023-04-02 01:02:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:03:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:03:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-04-02 01:03:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:07,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 01:03:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:11,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:03:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-04-02 01:03:11,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:03:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639018946] [2023-04-02 01:03:11,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639018946] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:03:11,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056537278] [2023-04-02 01:03:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:03:11,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:03:11,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:03:11,568 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 01:03:11,594 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 01:03:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:03:12,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 249 conjunts are in the unsatisfiable core [2023-04-02 01:03:12,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:03:12,629 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 01:03:12,678 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 5 treesize of output 3 [2023-04-02 01:03:12,953 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 01:03:13,085 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 19 treesize of output 18 [2023-04-02 01:03:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,157 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 14 treesize of output 16 [2023-04-02 01:03:13,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,306 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 22 treesize of output 19 [2023-04-02 01:03:13,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,312 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 14 treesize of output 14 [2023-04-02 01:03:13,315 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 8 treesize of output 7 [2023-04-02 01:03:13,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 18 [2023-04-02 01:03:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,421 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-04-02 01:03:13,421 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 3 case distinctions, treesize of input 32 treesize of output 38 [2023-04-02 01:03:13,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:03:13,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 32 [2023-04-02 01:03:13,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 7 treesize of output 3 [2023-04-02 01:03:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:13,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2023-04-02 01:03:13,641 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 7 treesize of output 3 [2023-04-02 01:03:14,249 WARN L861 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1406 (Array Int Int)) (v_ArrVal_1417 (Array Int Int)) (v_ArrVal_1438 (Array Int Int)) (v_ArrVal_1433 (Array Int Int)) (v_ArrVal_1411 (Array Int Int)) (v_ArrVal_1410 (Array Int Int)) (v_ArrVal_1476 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1441 (Array Int Int)) (v_ArrVal_1484 (Array Int Int)) (v_ArrVal_1481 (Array Int Int)) (v_ArrVal_1480 (Array Int Int)) (dll_circular_append_~last~1.offset Int) (v_ArrVal_1465 Int) (v_ArrVal_1409 (Array Int Int)) (dll_circular_append_~new_last~0.base Int) (v_ArrVal_1408 (Array Int Int))) (let ((.cse5 (store |c_old(#memory_$Pointer$.base)| dll_circular_append_~new_last~0.base v_ArrVal_1406)) (.cse4 (store |c_old(#memory_$Pointer$.offset)| dll_circular_append_~new_last~0.base v_ArrVal_1408))) (let ((.cse3 (select (select .cse5 (select (select .cse5 |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|)) (+ 4 (select (select .cse4 |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|))))) (let ((.cse1 (store .cse5 .cse3 (store (select .cse5 .cse3) dll_circular_append_~last~1.offset dll_circular_append_~new_last~0.base))) (.cse0 (store .cse4 .cse3 (store (select .cse4 .cse3) dll_circular_append_~last~1.offset 0)))) (and (= |c_#memory_$Pointer$.offset| (store (store .cse0 dll_circular_append_~new_last~0.base (store (store (select .cse0 dll_circular_append_~new_last~0.base) 4 dll_circular_append_~last~1.offset) 0 (select (select (store .cse0 dll_circular_append_~new_last~0.base v_ArrVal_1476) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|))) (select (select (store .cse1 dll_circular_append_~new_last~0.base v_ArrVal_1438) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|) v_ArrVal_1441)) (<= (+ dll_circular_append_~new_last~0.base 1) |c_#StackHeapBarrier|) (= (store (store .cse1 dll_circular_append_~new_last~0.base v_ArrVal_1417) (select (select (store .cse1 dll_circular_append_~new_last~0.base v_ArrVal_1481) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|) v_ArrVal_1411) |c_#memory_$Pointer$.base|) (= (let ((.cse2 (store (store (store |c_old(#memory_int)| dll_circular_append_~new_last~0.base v_ArrVal_1409) .cse3 v_ArrVal_1410) dll_circular_append_~new_last~0.base v_ArrVal_1480))) (store .cse2 (select (select (store .cse1 dll_circular_append_~new_last~0.base v_ArrVal_1452) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|) (store (select .cse2 (select (select (store .cse1 dll_circular_append_~new_last~0.base v_ArrVal_1433) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|)) (+ (select (select (store .cse0 dll_circular_append_~new_last~0.base v_ArrVal_1484) |c_dll_circular_append_#in~head.base|) |c_dll_circular_append_#in~head.offset|) 4) v_ArrVal_1465))) |c_#memory_int|) (= (select |c_old(#valid)| dll_circular_append_~new_last~0.base) 0)))))) is different from true [2023-04-02 01:03:14,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:14,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:29,756 WARN L223 SmtUtils]: Spent 15.40s on a formula simplification. DAG size of input: 356 DAG size of output: 116 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-02 01:03:29,757 INFO L321 Elim1Store]: treesize reduction 2275, result has 19.6 percent of original size [2023-04-02 01:03:29,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 16 new quantified variables, introduced 50 case distinctions, treesize of input 4969 treesize of output 7294 [2023-04-02 01:03:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:29,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:03:29,947 INFO L190 IndexEqualityManager]: detected not equals via solver