/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-ext3-properties/dll_circular_traversal-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:11:43,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:11:43,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:11:43,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 01:11:43,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 01:11:43,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 01:11:43,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 01:11:43,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 01:11:43,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 01:11:43,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 01:11:43,908 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 01:11:43,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 01:11:43,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:11:43,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:11:43,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:11:43,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:11:43,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:11:43,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:11:43,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:11:43,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:11:43,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:11:43,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:11:43,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:11:43,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:11:43,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 01:11:43,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 01:11:43,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 01:11:43,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 01:11:43,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 01:11:43,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 01:11:43,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 01:11:43,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 01:11:43,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 01:11:43,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 01:11:43,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 01:11:43,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 01:11:43,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 01:11:43,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 01:11:43,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:11:43,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:11:43,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:11:43,940 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 01:11:43,969 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:11:43,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:11:43,970 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:11:43,970 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:11:43,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:11:43,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:11:43,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:11:43,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:11:43,972 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:11:43,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:11:43,973 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:11:43,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:11:43,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:11:43,975 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:11:43,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:11:43,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:11:43,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:11:43,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:11:43,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:11:43,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:11:43,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:11:43,977 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:11:43,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:11:43,977 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:11:43,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:11:44,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:11:44,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:11:44,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:11:44,208 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:11:44,208 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:11:44,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2023-04-02 01:11:45,387 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:11:45,648 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:11:45,648 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_circular_traversal-2.i [2023-04-02 01:11:45,668 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384106d53/84e6267ad8c84297bcfba612b93f4ad3/FLAG9ea89312d [2023-04-02 01:11:45,679 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/384106d53/84e6267ad8c84297bcfba612b93f4ad3 [2023-04-02 01:11:45,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:11:45,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:11:45,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:11:45,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:11:45,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:11:45,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:11:45" (1/1) ... [2023-04-02 01:11:45,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fdf813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:45, skipping insertion in model container [2023-04-02 01:11:45,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:11:45" (1/1) ... [2023-04-02 01:11:45,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:11:45,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:11:46,030 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-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2023-04-02 01:11:46,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:11:46,047 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:11:46,084 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-ext3-properties/dll_circular_traversal-2.i[24211,24224] [2023-04-02 01:11:46,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:11:46,106 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:11:46,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46 WrapperNode [2023-04-02 01:11:46,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:11:46,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:11:46,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:11:46,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:11:46,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:11:46,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:11:46,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:11:46,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:11:46,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (1/1) ... [2023-04-02 01:11:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:11:46,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:11:46,187 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 01:11:46,188 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 01:11:46,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2023-04-02 01:11:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:11:46,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:11:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:11:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:11:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:11:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:11:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:11:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:11:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:11:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:11:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:11:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:11:46,221 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:11:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:11:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:11:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:11:46,222 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:11:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:11:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:11:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:11:46,223 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:11:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:11:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:11:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:11:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:11:46,224 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:11:46,225 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:11:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:11:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 01:11:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:11:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 01:11:46,226 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:11:46,227 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:11:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:11:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:11:46,228 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:11:46,229 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:11:46,230 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:11:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:11:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:11:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:11:46,231 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:11:46,232 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2023-04-02 01:11:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:11:46,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:11:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:11:46,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:11:46,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:11:46,497 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:11:46,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:11:46,617 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-04-02 01:11:46,664 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:11:46,675 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:11:46,675 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-02 01:11:46,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:11:46 BoogieIcfgContainer [2023-04-02 01:11:46,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:11:46,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:11:46,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:11:46,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:11:46,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:11:45" (1/3) ... [2023-04-02 01:11:46,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3025139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:11:46, skipping insertion in model container [2023-04-02 01:11:46,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:11:46" (2/3) ... [2023-04-02 01:11:46,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3025139f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:11:46, skipping insertion in model container [2023-04-02 01:11:46,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:11:46" (3/3) ... [2023-04-02 01:11:46,684 INFO L112 eAbstractionObserver]: Analyzing ICFG dll_circular_traversal-2.i [2023-04-02 01:11:46,696 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:11:46,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 01:11:46,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:11:46,759 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;@5af5ab5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:11:46,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 01:11:46,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:11:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:11:46,787 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:46,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:46,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:46,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:46,795 INFO L85 PathProgramCache]: Analyzing trace with hash 901834931, now seen corresponding path program 1 times [2023-04-02 01:11:46,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:46,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339295740] [2023-04-02 01:11:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:46,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:47,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:47,104 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 01:11:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339295740] [2023-04-02 01:11:47,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339295740] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:11:47,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:11:47,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 01:11:47,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321453869] [2023-04-02 01:11:47,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:11:47,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 01:11:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 01:11:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 01:11:47,145 INFO L87 Difference]: Start difference. First operand has 35 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:11:47,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:47,324 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2023-04-02 01:11:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:11:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-04-02 01:11:47,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:47,332 INFO L225 Difference]: With dead ends: 53 [2023-04-02 01:11:47,332 INFO L226 Difference]: Without dead ends: 26 [2023-04-02 01:11:47,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:11:47,338 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:47,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 7 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:11:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-02 01:11:47,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-04-02 01:11:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-04-02 01:11:47,369 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-04-02 01:11:47,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:47,369 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-04-02 01:11:47,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:11:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-04-02 01:11:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-04-02 01:11:47,370 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:47,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:11:47,371 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:47,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1462947391, now seen corresponding path program 1 times [2023-04-02 01:11:47,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:47,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273234357] [2023-04-02 01:11:47,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:47,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,140 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 01:11:48,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:48,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273234357] [2023-04-02 01:11:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273234357] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:11:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:11:48,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 01:11:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788737429] [2023-04-02 01:11:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:11:48,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 01:11:48,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:48,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 01:11:48,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:11:48,146 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:11:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:48,432 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-04-02 01:11:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:11:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-04-02 01:11:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:48,435 INFO L225 Difference]: With dead ends: 37 [2023-04-02 01:11:48,435 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 01:11:48,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-04-02 01:11:48,441 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 51 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:48,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 15 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:11:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 01:11:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-04-02 01:11:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:11:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-04-02 01:11:48,453 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 18 [2023-04-02 01:11:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:48,454 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-04-02 01:11:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-02 01:11:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-04-02 01:11:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 01:11:48,455 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:48,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:11:48,455 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:48,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1633757584, now seen corresponding path program 1 times [2023-04-02 01:11:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433184637] [2023-04-02 01:11:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,600 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 01:11:48,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:48,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433184637] [2023-04-02 01:11:48,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433184637] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:11:48,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:11:48,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:11:48,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167883668] [2023-04-02 01:11:48,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:11:48,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:11:48,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:48,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:11:48,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:11:48,604 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:48,767 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-04-02 01:11:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:11:48,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-04-02 01:11:48,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:48,768 INFO L225 Difference]: With dead ends: 44 [2023-04-02 01:11:48,768 INFO L226 Difference]: Without dead ends: 29 [2023-04-02 01:11:48,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 01:11:48,769 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 48 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:48,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 9 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:11:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-04-02 01:11:48,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2023-04-02 01:11:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-04-02 01:11:48,776 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2023-04-02 01:11:48,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:48,777 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-04-02 01:11:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-04-02 01:11:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-04-02 01:11:48,778 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:48,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:48,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:11:48,778 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:48,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 351762783, now seen corresponding path program 1 times [2023-04-02 01:11:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21314076] [2023-04-02 01:11:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21314076] [2023-04-02 01:11:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21314076] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:11:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890915977] [2023-04-02 01:11:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:11:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:11:48,969 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 01:11:48,971 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 01:11:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:49,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-02 01:11:49,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:11:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:49,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:11:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890915977] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:11:49,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:11:49,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-04-02 01:11:49,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796925913] [2023-04-02 01:11:49,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:11:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 01:11:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:49,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 01:11:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-04-02 01:11:49,420 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:11:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:49,630 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-04-02 01:11:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:11:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-04-02 01:11:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:49,632 INFO L225 Difference]: With dead ends: 45 [2023-04-02 01:11:49,632 INFO L226 Difference]: Without dead ends: 32 [2023-04-02 01:11:49,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:11:49,637 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 64 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:49,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 9 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:11:49,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-04-02 01:11:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-04-02 01:11:49,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-04-02 01:11:49,647 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2023-04-02 01:11:49,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:49,648 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-04-02 01:11:49,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:11:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-04-02 01:11:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:11:49,649 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:49,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:49,659 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 01:11:49,859 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 01:11:49,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:49,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1635943873, now seen corresponding path program 2 times [2023-04-02 01:11:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085722988] [2023-04-02 01:11:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085722988] [2023-04-02 01:11:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085722988] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:11:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154393612] [2023-04-02 01:11:50,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:11:50,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:11:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:11:50,065 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 01:11:50,068 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 01:11:50,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:11:50,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:11:50,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 01:11:50,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:11:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:50,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:11:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:50,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154393612] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:11:50,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:11:50,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2023-04-02 01:11:50,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137124123] [2023-04-02 01:11:50,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:11:50,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 01:11:50,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:50,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 01:11:50,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-04-02 01:11:50,442 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:11:50,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:50,659 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2023-04-02 01:11:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 01:11:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-04-02 01:11:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:50,660 INFO L225 Difference]: With dead ends: 48 [2023-04-02 01:11:50,660 INFO L226 Difference]: Without dead ends: 35 [2023-04-02 01:11:50,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2023-04-02 01:11:50,661 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 69 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 11 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:11:50,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-04-02 01:11:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-04-02 01:11:50,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2023-04-02 01:11:50,667 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2023-04-02 01:11:50,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:50,667 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2023-04-02 01:11:50,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:11:50,667 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2023-04-02 01:11:50,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-04-02 01:11:50,668 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:50,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:50,677 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 01:11:50,868 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 01:11:50,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:50,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:50,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1604144479, now seen corresponding path program 3 times [2023-04-02 01:11:50,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:50,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436327000] [2023-04-02 01:11:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:50,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:51,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436327000] [2023-04-02 01:11:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436327000] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:11:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806576658] [2023-04-02 01:11:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-04-02 01:11:51,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:11:51,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:11:51,169 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 01:11:51,172 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 01:11:51,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-04-02 01:11:51,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:11:51,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 01:11:51,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:11:52,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:52,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:11:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:11:52,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806576658] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:11:52,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:11:52,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 15 [2023-04-02 01:11:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348540014] [2023-04-02 01:11:52,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:11:52,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 01:11:52,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:11:52,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 01:11:52,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-04-02 01:11:52,169 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:11:52,408 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2023-04-02 01:11:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 01:11:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-04-02 01:11:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:11:52,409 INFO L225 Difference]: With dead ends: 51 [2023-04-02 01:11:52,409 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 01:11:52,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2023-04-02 01:11:52,410 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 60 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-02 01:11:52,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 11 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-02 01:11:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 01:11:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-04-02 01:11:52,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-04-02 01:11:52,415 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 27 [2023-04-02 01:11:52,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:11:52,416 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-04-02 01:11:52,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:11:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-04-02 01:11:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-04-02 01:11:52,417 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:11:52,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:11:52,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 01:11:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:11:52,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:11:52,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:11:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1981228607, now seen corresponding path program 4 times [2023-04-02 01:11:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:11:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214380566] [2023-04-02 01:11:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:11:52,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:11:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:53,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:11:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:11:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:11:53,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 01:11:53,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:11:53,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214380566] [2023-04-02 01:11:53,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214380566] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:11:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738451332] [2023-04-02 01:11:53,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-04-02 01:11:53,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:11:53,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:11:53,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:11:53,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 01:12:02,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-04-02 01:12:02,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:12:02,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 49 conjunts are in the unsatisfiable core [2023-04-02 01:12:02,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:12:02,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:02,298 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 29 treesize of output 17 [2023-04-02 01:12:02,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:02,359 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-04-02 01:12:02,359 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 1 case distinctions, treesize of input 39 treesize of output 35 [2023-04-02 01:12:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 01:12:02,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:12:02,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:02,696 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 01:12:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738451332] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:12:02,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:12:02,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 28 [2023-04-02 01:12:02,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546703399] [2023-04-02 01:12:02,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:12:02,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 01:12:02,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:12:02,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 01:12:02,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-04-02 01:12:02,966 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:12:03,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:12:03,542 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2023-04-02 01:12:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 01:12:03,543 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-04-02 01:12:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:12:03,558 INFO L225 Difference]: With dead ends: 40 [2023-04-02 01:12:03,559 INFO L226 Difference]: Without dead ends: 38 [2023-04-02 01:12:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=1333, Unknown=0, NotChecked=0, Total=1560 [2023-04-02 01:12:03,560 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 57 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:12:03,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 31 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:12:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-04-02 01:12:03,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-04-02 01:12:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:12:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2023-04-02 01:12:03,566 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 30 [2023-04-02 01:12:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:12:03,566 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2023-04-02 01:12:03,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.074074074074074) internal successors, (56), 24 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:12:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2023-04-02 01:12:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-04-02 01:12:03,567 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:12:03,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:12:03,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 01:12:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:12:03,768 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:12:03,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:12:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1342034320, now seen corresponding path program 1 times [2023-04-02 01:12:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:12:03,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691139991] [2023-04-02 01:12:03,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:12:03,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:12:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:12:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:12:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:12:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:12:06,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691139991] [2023-04-02 01:12:06,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691139991] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:12:06,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688894559] [2023-04-02 01:12:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:12:06,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:12:06,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:12:06,483 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:12:06,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 01:12:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:06,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 108 conjunts are in the unsatisfiable core [2023-04-02 01:12:06,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:12:06,741 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 01:12:06,767 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:12:06,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 01:12:06,848 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-04-02 01:12:06,848 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 22 [2023-04-02 01:12:06,996 INFO L321 Elim1Store]: treesize reduction 70, result has 28.6 percent of original size [2023-04-02 01:12:06,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 27 treesize of output 45 [2023-04-02 01:12:07,115 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 01:12:07,119 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 01:12:07,214 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-04-02 01:12:07,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-04-02 01:12:07,319 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-04-02 01:12:07,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:12:07,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:07,339 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 34 treesize of output 23 [2023-04-02 01:12:07,347 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 21 treesize of output 25 [2023-04-02 01:12:07,368 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 01:12:07,369 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 1 case distinctions, treesize of input 49 treesize of output 46 [2023-04-02 01:12:07,374 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 18 treesize of output 26 [2023-04-02 01:12:07,383 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 18 treesize of output 20 [2023-04-02 01:12:07,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:07,465 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 42 treesize of output 35 [2023-04-02 01:12:07,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:07,478 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 22 treesize of output 19 [2023-04-02 01:12:07,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-04-02 01:12:07,500 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 24 treesize of output 26 [2023-04-02 01:12:07,506 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 01:12:07,509 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 01:12:07,655 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 01:12:07,658 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 01:12:07,663 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 01:12:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:12:07,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:12:07,735 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1595 (Array Int Int))) (= c_main_~data_init~0 (let ((.cse0 (+ c_main_~ptr~0.offset 4))) (select (select (store |c_#memory_int| c_main_~ptr~0.base v_ArrVal_1595) (select (select |c_#memory_$Pointer$.base| c_main_~ptr~0.base) .cse0)) (select (select |c_#memory_$Pointer$.offset| c_main_~ptr~0.base) .cse0))))) is different from false [2023-04-02 01:12:07,744 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1595 (Array Int Int))) (= c_main_~data_init~0 (let ((.cse0 (+ 4 |c_main_#t~ret6.offset|))) (select (select (store |c_#memory_int| |c_main_#t~ret6.base| v_ArrVal_1595) (select (select |c_#memory_$Pointer$.base| |c_main_#t~ret6.base|) .cse0)) (select (select |c_#memory_$Pointer$.offset| |c_main_#t~ret6.base|) .cse0))))) is different from false [2023-04-02 01:12:08,532 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-02 01:12:08,533 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 97 treesize of output 1 [2023-04-02 01:12:08,545 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1595 (Array Int Int))) (= (let ((.cse0 (+ |c_dll_circular_create_#res.offset| 4))) (select (select (store |c_#memory_int| |c_dll_circular_create_#res.base| v_ArrVal_1595) (select (select |c_#memory_$Pointer$.base| |c_dll_circular_create_#res.base|) .cse0)) (select (select |c_#memory_$Pointer$.offset| |c_dll_circular_create_#res.base|) .cse0))) |c_dll_circular_create_#in~data|)) is different from false [2023-04-02 01:12:08,570 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1586 (Array Int Int)) (v_ArrVal_1595 (Array Int Int)) (v_ArrVal_1591 (Array Int Int)) (v_ArrVal_1590 (Array Int Int))) (= (let ((.cse0 (+ c_dll_circular_create_~head~0.offset 4))) (select (select (store (store |c_#memory_int| c_dll_circular_create_~last~0.base v_ArrVal_1591) c_dll_circular_create_~head~0.base v_ArrVal_1595) (select (select (store |c_#memory_$Pointer$.base| c_dll_circular_create_~last~0.base v_ArrVal_1586) c_dll_circular_create_~head~0.base) .cse0)) (select (select (store |c_#memory_$Pointer$.offset| c_dll_circular_create_~last~0.base v_ArrVal_1590) c_dll_circular_create_~head~0.base) .cse0))) |c_dll_circular_create_#in~data|)) is different from false [2023-04-02 01:12:08,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:08,591 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 86 [2023-04-02 01:12:08,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:08,604 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 2 case distinctions, treesize of input 79 treesize of output 85 [2023-04-02 01:12:08,612 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 274 treesize of output 262 [2023-04-02 01:12:08,624 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 130 treesize of output 126 [2023-04-02 01:12:08,635 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:08,635 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 2 case distinctions, treesize of input 254 treesize of output 220 [2023-04-02 01:12:08,644 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 1456 treesize of output 1402 [2023-04-02 01:12:08,661 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 84 treesize of output 80 [2023-04-02 01:12:08,665 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 162 treesize of output 154 [2023-04-02 01:12:08,670 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 154 treesize of output 146 [2023-04-02 01:12:13,973 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-04-02 01:12:13,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 28 treesize of output 42 [2023-04-02 01:12:14,010 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-04-02 01:12:14,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 49 treesize of output 58 [2023-04-02 01:12:14,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:14,823 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 103 treesize of output 79 [2023-04-02 01:12:14,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:14,930 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 402145 treesize of output 400293 [2023-04-02 01:12:15,447 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:15,450 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 1044 treesize of output 1042 [2023-04-02 01:12:15,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:15,507 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 1139 treesize of output 1111 [2023-04-02 01:12:15,548 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:15,549 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 1074 treesize of output 1068 [2023-04-02 01:12:15,585 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:15,586 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 1113 treesize of output 1049 [2023-04-02 01:12:16,741 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 100 treesize of output 94 [2023-04-02 01:12:17,494 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:17,494 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 546 treesize of output 538 [2023-04-02 01:12:18,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:18,287 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 51 treesize of output 44 [2023-04-02 01:12:18,289 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:18,292 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 60 treesize of output 52 [2023-04-02 01:12:18,300 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 48 treesize of output 44 [2023-04-02 01:12:18,304 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 22 treesize of output 20 [2023-04-02 01:12:18,323 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 01:12:18,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:18,332 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 48 treesize of output 41 [2023-04-02 01:12:18,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:18,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:18,358 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 12830 treesize of output 12484 [2023-04-02 01:12:18,417 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 274 treesize of output 266 [2023-04-02 01:12:18,426 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 266 treesize of output 250 [2023-04-02 01:12:18,720 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 01:12:18,722 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 01:12:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-04-02 01:12:19,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688894559] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:12:19,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:12:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 15] total 42 [2023-04-02 01:12:19,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099291352] [2023-04-02 01:12:19,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:12:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-04-02 01:12:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:12:19,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-04-02 01:12:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1249, Unknown=8, NotChecked=300, Total=1722 [2023-04-02 01:12:19,943 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:12:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:12:28,417 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-04-02 01:12:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 01:12:28,417 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-04-02 01:12:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:12:28,418 INFO L225 Difference]: With dead ends: 44 [2023-04-02 01:12:28,418 INFO L226 Difference]: Without dead ends: 42 [2023-04-02 01:12:28,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=425, Invalid=2663, Unknown=8, NotChecked=444, Total=3540 [2023-04-02 01:12:28,420 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 71 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 10 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:12:28,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 59 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 811 Invalid, 15 Unknown, 163 Unchecked, 1.3s Time] [2023-04-02 01:12:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-04-02 01:12:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2023-04-02 01:12:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:12:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2023-04-02 01:12:28,427 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 33 [2023-04-02 01:12:28,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:12:28,427 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2023-04-02 01:12:28,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.7317073170731707) internal successors, (71), 37 states have internal predecessors, (71), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:12:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2023-04-02 01:12:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-04-02 01:12:28,428 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:12:28,429 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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 01:12:28,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 01:12:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:12:28,636 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:12:28,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:12:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1347994156, now seen corresponding path program 1 times [2023-04-02 01:12:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:12:28,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106260645] [2023-04-02 01:12:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:12:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:12:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:12:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:12:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-02 01:12:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:12:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106260645] [2023-04-02 01:12:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106260645] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:12:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078313598] [2023-04-02 01:12:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:12:29,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:12:29,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:12:29,909 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:12:29,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 01:12:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:12:30,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 123 conjunts are in the unsatisfiable core [2023-04-02 01:12:30,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:12:30,188 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 01:12:30,236 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 01:12:30,292 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-04-02 01:12:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 01:12:30,362 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-04-02 01:12:30,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:30,368 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 24 treesize of output 21 [2023-04-02 01:12:30,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:30,376 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 16 treesize of output 20 [2023-04-02 01:12:30,436 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-04-02 01:12:30,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-04-02 01:12:30,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-04-02 01:12:30,572 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 01:12:30,681 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2023-04-02 01:12:30,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2023-04-02 01:12:30,824 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2023-04-02 01:12:30,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:12:30,954 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-04-02 01:12:30,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-04-02 01:12:31,018 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2023-04-02 01:12:31,052 INFO L321 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2023-04-02 01:12:31,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 55 treesize of output 98 [2023-04-02 01:12:31,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,067 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 16 treesize of output 20 [2023-04-02 01:12:31,095 INFO L321 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2023-04-02 01:12:31,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 22 treesize of output 32 [2023-04-02 01:12:31,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 63 treesize of output 32 [2023-04-02 01:12:31,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2023-04-02 01:12:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,261 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 16 [2023-04-02 01:12:31,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,268 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 16 [2023-04-02 01:12:31,274 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 22 treesize of output 24 [2023-04-02 01:12:31,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 01:12:31,282 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 20 treesize of output 22 [2023-04-02 01:12:31,290 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 10 treesize of output 9 [2023-04-02 01:12:31,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,451 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 35 treesize of output 28 [2023-04-02 01:12:31,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:12:31,457 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 21 treesize of output 20 [2023-04-02 01:12:31,465 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 20 treesize of output 22 [2023-04-02 01:12:31,559 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 20 treesize of output 22 [2023-04-02 01:12:31,563 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 33 treesize of output 15 [2023-04-02 01:12:31,566 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 9 treesize of output 3 [2023-04-02 01:12:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:12:31,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:12:31,692 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2074 (Array Int Int))) (= c_main_~data_new~0 (+ 1 (let ((.cse0 (+ c_main_~ptr~0.offset 8))) (select (select (store |c_#memory_int| c_main_~head~1.base v_ArrVal_2074) (select (select |c_#memory_$Pointer$.base| c_main_~ptr~0.base) .cse0)) (select (select |c_#memory_$Pointer$.offset| c_main_~ptr~0.base) .cse0)))))) is different from false [2023-04-02 01:12:33,926 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_main_~ptr~0.offset_24 Int) (v_ArrVal_2070 Int) (v_ArrVal_2074 (Array Int Int)) (v_ArrVal_2072 Int)) (or (< |c_main_#t~ret6.offset| v_main_~ptr~0.offset_24) (= (let ((.cse0 (+ 8 |c_main_#t~ret6.offset|))) (select (select (store |c_#memory_int| |c_main_#t~ret6.base| v_ArrVal_2074) (select (store (select |c_#memory_$Pointer$.base| |c_main_#t~ret6.base|) v_main_~ptr~0.offset_24 v_ArrVal_2070) .cse0)) (select (store (select |c_#memory_$Pointer$.offset| |c_main_#t~ret6.base|) v_main_~ptr~0.offset_24 v_ArrVal_2072) .cse0))) 1))) is different from false [2023-04-02 01:12:35,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:35,944 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 308 treesize of output 253 [2023-04-02 01:12:35,959 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:12:35,960 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 244 treesize of output 227 [2023-04-02 01:12:35,966 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:35,967 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:35,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:35,968 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:35,970 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:35,971 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:12:48,413 WARN L223 SmtUtils]: Spent 7.76s on a formula simplification. DAG size of input: 20 DAG size of output: 4 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-02 01:12:48,413 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-04-02 01:12:48,795 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 19196025241530 treesize of output 19052272025532 [2023-04-02 01:13:06,405 WARN L223 SmtUtils]: Spent 16.67s on a formula simplification. DAG size of input: 205893 DAG size of output: 195 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-02 01:13:06,449 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:06,464 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 4146 treesize of output 4018 [2023-04-02 01:13:06,574 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:06,585 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 2124 treesize of output 2068 [2023-04-02 01:13:06,662 INFO L321 Elim1Store]: treesize reduction 16, result has 20.0 percent of original size [2023-04-02 01:13:06,662 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 5796 treesize of output 5546 [2023-04-02 01:13:06,738 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:06,747 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 5166 treesize of output 4918 [2023-04-02 01:13:06,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:06,790 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:06,847 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:06,970 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:07,254 INFO L321 Elim1Store]: treesize reduction 45, result has 8.2 percent of original size [2023-04-02 01:13:07,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 179 [2023-04-02 01:13:07,288 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 46 treesize of output 42 [2023-04-02 01:13:07,414 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 01:13:07,901 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 110 treesize of output 108 [2023-04-02 01:13:07,910 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:07,920 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:07,936 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 162 treesize of output 158 [2023-04-02 01:13:07,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:07,956 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:08,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:08,400 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 59 [2023-04-02 01:13:09,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:09,284 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 83 [2023-04-02 01:13:12,035 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:12,036 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 188 treesize of output 171 [2023-04-02 01:13:13,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:13,493 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 228 treesize of output 173 [2023-04-02 01:13:13,502 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:13,503 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:13,974 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 1686214 treesize of output 1684676 [2023-04-02 01:13:14,300 INFO L173 IndexEqualityManager]: detected equality via solver [2023-04-02 01:13:14,309 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 262 treesize of output 256 [2023-04-02 01:13:14,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:14,487 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 560 treesize of output 558 [2023-04-02 01:13:14,519 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 546 treesize of output 514 [2023-04-02 01:13:14,602 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:13:14,603 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 568 treesize of output 566 [2023-04-02 01:13:14,635 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 554 treesize of output 546 [2023-04-02 01:13:14,672 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 274 treesize of output 270 [2023-04-02 01:13:17,125 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 01:13:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 12 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:13:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078313598] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 01:13:18,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 01:13:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 20] total 49 [2023-04-02 01:13:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006105871] [2023-04-02 01:13:18,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 01:13:18,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-04-02 01:13:18,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:13:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-04-02 01:13:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1936, Unknown=38, NotChecked=182, Total=2352 [2023-04-02 01:13:18,514 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 49 states, 48 states have (on average 1.625) internal successors, (78), 44 states have internal predecessors, (78), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:13:32,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:13:32,659 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2023-04-02 01:13:32,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 01:13:32,659 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.625) internal successors, (78), 44 states have internal predecessors, (78), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-04-02 01:13:32,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:13:32,660 INFO L225 Difference]: With dead ends: 47 [2023-04-02 01:13:32,660 INFO L226 Difference]: Without dead ends: 41 [2023-04-02 01:13:32,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=435, Invalid=3314, Unknown=41, NotChecked=242, Total=4032 [2023-04-02 01:13:32,663 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 94 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:13:32,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 61 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 881 Invalid, 0 Unknown, 77 Unchecked, 5.3s Time] [2023-04-02 01:13:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-04-02 01:13:32,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-04-02 01:13:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 01:13:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2023-04-02 01:13:32,669 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 34 [2023-04-02 01:13:32,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:13:32,669 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2023-04-02 01:13:32,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.625) internal successors, (78), 44 states have internal predecessors, (78), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-04-02 01:13:32,670 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2023-04-02 01:13:32,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-04-02 01:13:32,670 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:13:32,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:13:32,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 01:13:32,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:13:32,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:13:32,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:13:32,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1304946529, now seen corresponding path program 2 times [2023-04-02 01:13:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:13:32,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749806892] [2023-04-02 01:13:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:13:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:13:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:13:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:13:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:13:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:13:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:13:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:13:40,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:13:40,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749806892] [2023-04-02 01:13:40,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749806892] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 01:13:40,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275907781] [2023-04-02 01:13:40,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 01:13:40,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 01:13:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:13:40,404 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 01:13:40,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 01:13:40,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 01:13:40,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 01:13:40,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 148 conjunts are in the unsatisfiable core [2023-04-02 01:13:40,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 01:13:40,733 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 01:13:41,133 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 01:13:41,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 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 12 treesize of output 14 [2023-04-02 01:13:42,043 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-04-02 01:13:42,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2023-04-02 01:13:42,596 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 01:13:42,612 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 01:13:43,295 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-04-02 01:13:43,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-04-02 01:13:43,989 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-04-02 01:13:44,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2023-04-02 01:13:44,035 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 21 treesize of output 25 [2023-04-02 01:13:44,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:44,058 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 34 treesize of output 23 [2023-04-02 01:13:44,148 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-04-02 01:13:44,148 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 1 case distinctions, treesize of input 58 treesize of output 53 [2023-04-02 01:13:44,165 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 18 treesize of output 26 [2023-04-02 01:13:44,193 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 18 treesize of output 20 [2023-04-02 01:13:44,800 INFO L321 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2023-04-02 01:13:44,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 29 [2023-04-02 01:13:45,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 75 [2023-04-02 01:13:45,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 40 [2023-04-02 01:13:45,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 45 [2023-04-02 01:13:45,663 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 20 treesize of output 19 [2023-04-02 01:13:45,692 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 17 treesize of output 15 [2023-04-02 01:13:46,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-04-02 01:13:46,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:46,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 39 [2023-04-02 01:13:46,394 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-04-02 01:13:46,395 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 71 [2023-04-02 01:13:46,422 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 17 treesize of output 15 [2023-04-02 01:13:48,156 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 26 treesize of output 28 [2023-04-02 01:13:48,191 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-04-02 01:13:48,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 71 [2023-04-02 01:13:48,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:48,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-04-02 01:13:48,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-04-02 01:13:49,446 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-04-02 01:13:49,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 54 [2023-04-02 01:13:49,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 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 01:13:49,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-04-02 01:13:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:13:50,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 01:13:59,005 WARN L223 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 251 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-04-02 01:14:00,925 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-04-02 01:14:00,926 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 4981 treesize of output 1 [2023-04-02 01:14:01,657 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (+ c_dll_circular_create_~last~0.offset 4))) (let ((.cse2 (store |c_#memory_$Pointer$.base| c_dll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.base| c_dll_circular_create_~last~0.base) .cse10 c_dll_circular_create_~head~0.base))) (.cse6 (store |c_#memory_$Pointer$.offset| c_dll_circular_create_~last~0.base (store (select |c_#memory_$Pointer$.offset| c_dll_circular_create_~last~0.base) .cse10 c_dll_circular_create_~head~0.offset)))) (let ((.cse7 (select .cse6 c_dll_circular_create_~head~0.base)) (.cse3 (select .cse2 c_dll_circular_create_~head~0.base)) (.cse9 (+ c_dll_circular_create_~head~0.offset 4))) (let ((.cse4 (+ c_dll_circular_create_~head~0.offset 8)) (.cse1 (select .cse3 .cse9)) (.cse5 (+ (select .cse7 .cse9) 4))) (and (forall ((v_ArrVal_2548 (Array Int Int)) (v_ArrVal_2560 Int) (v_ArrVal_2566 (Array Int Int)) (v_ArrVal_2552 Int) (v_ArrVal_2555 Int) (v_ArrVal_2563 (Array Int Int)) (v_ArrVal_2559 Int)) (let ((.cse0 (select (select (store .cse6 c_dll_circular_create_~head~0.base (store (store .cse7 .cse4 v_ArrVal_2555) c_dll_circular_create_~head~0.offset v_ArrVal_2559)) .cse1) .cse5))) (or (= c_dll_circular_create_~head~0.offset .cse0) (= (select (select (store (store (store |c_#memory_int| c_dll_circular_create_~last~0.base v_ArrVal_2548) c_dll_circular_create_~head~0.base v_ArrVal_2563) .cse1 v_ArrVal_2566) (select (select (store .cse2 c_dll_circular_create_~head~0.base (store (store .cse3 .cse4 v_ArrVal_2552) c_dll_circular_create_~head~0.offset v_ArrVal_2560)) .cse1) .cse5)) .cse0) |c_dll_circular_create_#in~data|)))) (forall ((v_ArrVal_2548 (Array Int Int)) (v_ArrVal_2560 Int) (v_ArrVal_2566 (Array Int Int)) (v_ArrVal_2552 Int) (v_ArrVal_2555 Int) (v_ArrVal_2563 (Array Int Int)) (v_ArrVal_2559 Int)) (let ((.cse8 (select (select (store .cse2 c_dll_circular_create_~head~0.base (store (store .cse3 .cse4 v_ArrVal_2552) c_dll_circular_create_~head~0.offset v_ArrVal_2560)) .cse1) .cse5))) (or (= .cse8 c_dll_circular_create_~head~0.base) (= (select (select (store (store (store |c_#memory_int| c_dll_circular_create_~last~0.base v_ArrVal_2548) c_dll_circular_create_~head~0.base v_ArrVal_2563) .cse1 v_ArrVal_2566) .cse8) (select (select (store .cse6 c_dll_circular_create_~head~0.base (store (store .cse7 .cse4 v_ArrVal_2555) c_dll_circular_create_~head~0.offset v_ArrVal_2559)) .cse1) .cse5)) |c_dll_circular_create_#in~data|))))))))) is different from false [2023-04-02 01:14:01,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:14:01,787 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 831 treesize of output 835 [2023-04-02 01:14:01,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:14:01,910 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 831 treesize of output 835 [2023-04-02 01:14:20,564 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:14:20,564 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1916 treesize of output 1917 [2023-04-02 01:14:20,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:14:20,877 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 2 case distinctions, treesize of input 2747 treesize of output 2141 [2023-04-02 01:15:04,578 WARN L223 SmtUtils]: Spent 39.04s on a formula simplification. DAG size of input: 469 DAG size of output: 153 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-04-02 01:15:04,579 INFO L321 Elim1Store]: treesize reduction 1436, result has 21.1 percent of original size [2023-04-02 01:15:04,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 0 disjoint index pairs (out of 105 index pairs), introduced 21 new quantified variables, introduced 105 case distinctions, treesize of input 60850330081 treesize of output 60258389677 [2023-04-02 01:15:19,881 WARN L223 SmtUtils]: Spent 15.16s on a formula simplification. DAG size of input: 27308 DAG size of output: 1171 (called from [L 809] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-04-02 01:15:20,498 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-04-02 01:15:20,499 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 2 case distinctions, treesize of input 786083 treesize of output 439989