/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:12:39,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:12:39,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:12:39,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 00:12:39,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 00:12:39,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 00:12:39,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 00:12:39,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 00:12:39,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 00:12:39,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 00:12:39,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 00:12:39,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 00:12:39,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 00:12:39,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 00:12:39,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 00:12:39,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 00:12:39,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 00:12:39,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 00:12:39,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 00:12:39,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 00:12:39,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 00:12:39,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 00:12:39,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 00:12:39,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 00:12:39,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 00:12:39,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 00:12:39,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 00:12:39,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 00:12:39,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 00:12:39,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 00:12:39,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 00:12:39,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 00:12:39,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 00:12:39,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 00:12:39,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 00:12:39,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 00:12:39,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 00:12:39,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 00:12:39,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 00:12:39,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 00:12:39,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 00:12:39,126 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 [2023-03-31 00:12:39,153 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:12:39,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:12:39,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:12:39,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:12:39,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:12:39,155 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:12:39,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:12:39,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:12:39,155 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:12:39,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:12:39,156 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:12:39,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:12:39,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:12:39,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:12:39,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:12:39,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:12:39,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:12:39,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:12:39,158 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:12:39,159 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:12:39,159 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:12:39,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:12:39,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:12:39,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:12:39,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:12:39,381 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:12:39,384 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:12:39,385 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2023-03-31 00:12:40,443 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:12:40,642 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:12:40,643 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2023-03-31 00:12:40,653 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee9804d6/0dfae6b588084466a30dee2a975055f3/FLAG000b6c24e [2023-03-31 00:12:40,667 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ee9804d6/0dfae6b588084466a30dee2a975055f3 [2023-03-31 00:12:40,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:12:40,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:12:40,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:12:40,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:12:40,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:12:40,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:12:40" (1/1) ... [2023-03-31 00:12:40,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c3336fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:40, skipping insertion in model container [2023-03-31 00:12:40,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:12:40" (1/1) ... [2023-03-31 00:12:40,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:12:40,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:12:40,947 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2023-03-31 00:12:40,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:12:40,963 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:12:40,997 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i[24989,25002] [2023-03-31 00:12:40,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:12:41,016 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:12:41,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41 WrapperNode [2023-03-31 00:12:41,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:12:41,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:12:41,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:12:41,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:12:41,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,069 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:12:41,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:12:41,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:12:41,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:12:41,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (1/1) ... [2023-03-31 00:12:41,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:12:41,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:12:41,114 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) [2023-03-31 00:12:41,139 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 [2023-03-31 00:12:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:12:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:12:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:12:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 00:12:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 00:12:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-03-31 00:12:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-03-31 00:12:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2023-03-31 00:12:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2023-03-31 00:12:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2023-03-31 00:12:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:12:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 00:12:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 00:12:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 00:12:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 00:12:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 00:12:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 00:12:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 00:12:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 00:12:41,160 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 00:12:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 00:12:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 00:12:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 00:12:41,161 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 00:12:41,162 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 00:12:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 00:12:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 00:12:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 00:12:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 00:12:41,167 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 00:12:41,168 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-03-31 00:12:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-03-31 00:12:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 00:12:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 00:12:41,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:12:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2023-03-31 00:12:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2023-03-31 00:12:41,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 00:12:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:12:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2023-03-31 00:12:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:12:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 00:12:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 00:12:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:12:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:12:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:12:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:12:41,423 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:12:41,426 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:12:41,510 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-03-31 00:12:41,658 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:12:41,663 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:12:41,663 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-03-31 00:12:41,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:12:41 BoogieIcfgContainer [2023-03-31 00:12:41,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:12:41,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:12:41,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:12:41,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:12:41,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:12:40" (1/3) ... [2023-03-31 00:12:41,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fdf667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:12:41, skipping insertion in model container [2023-03-31 00:12:41,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:12:41" (2/3) ... [2023-03-31 00:12:41,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51fdf667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:12:41, skipping insertion in model container [2023-03-31 00:12:41,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:12:41" (3/3) ... [2023-03-31 00:12:41,671 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2023-03-31 00:12:41,684 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:12:41,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:12:41,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:12:41,751 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;@4d6faf10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:12:41,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:12:41,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 43 states have internal predecessors, (62), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:12:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-03-31 00:12:41,760 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:41,761 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:41,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:41,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash -507660691, now seen corresponding path program 1 times [2023-03-31 00:12:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143171637] [2023-03-31 00:12:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:41,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-03-31 00:12:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:42,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:42,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143171637] [2023-03-31 00:12:42,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143171637] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:12:42,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:12:42,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 00:12:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155607072] [2023-03-31 00:12:42,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:12:42,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 00:12:42,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:12:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 00:12:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 00:12:42,233 INFO L87 Difference]: Start difference. First operand has 57 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 43 states have internal predecessors, (62), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 00:12:42,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:12:42,645 INFO L93 Difference]: Finished difference Result 112 states and 154 transitions. [2023-03-31 00:12:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 00:12:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2023-03-31 00:12:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:12:42,657 INFO L225 Difference]: With dead ends: 112 [2023-03-31 00:12:42,657 INFO L226 Difference]: Without dead ends: 48 [2023-03-31 00:12:42,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:12:42,665 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 107 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 00:12:42,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 16 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 00:12:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-03-31 00:12:42,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-03-31 00:12:42,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:42,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-03-31 00:12:42,692 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 31 [2023-03-31 00:12:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:12:42,693 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-03-31 00:12:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-03-31 00:12:42,693 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-03-31 00:12:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-03-31 00:12:42,694 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:42,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:42,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:12:42,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:42,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 925532482, now seen corresponding path program 1 times [2023-03-31 00:12:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:42,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541109449] [2023-03-31 00:12:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:42,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 00:12:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:42,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541109449] [2023-03-31 00:12:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541109449] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:12:42,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:12:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 00:12:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628558160] [2023-03-31 00:12:42,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:12:42,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 00:12:42,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:12:42,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 00:12:42,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 00:12:42,894 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-31 00:12:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:12:43,122 INFO L93 Difference]: Finished difference Result 87 states and 111 transitions. [2023-03-31 00:12:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 00:12:43,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2023-03-31 00:12:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:12:43,126 INFO L225 Difference]: With dead ends: 87 [2023-03-31 00:12:43,126 INFO L226 Difference]: Without dead ends: 52 [2023-03-31 00:12:43,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-03-31 00:12:43,132 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 63 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:12:43,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 7 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:12:43,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-03-31 00:12:43,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2023-03-31 00:12:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2023-03-31 00:12:43,155 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 36 [2023-03-31 00:12:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:12:43,156 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2023-03-31 00:12:43,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-03-31 00:12:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2023-03-31 00:12:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-03-31 00:12:43,157 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:43,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:43,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:12:43,158 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:43,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1619920430, now seen corresponding path program 1 times [2023-03-31 00:12:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589948629] [2023-03-31 00:12:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:43,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-03-31 00:12:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:43,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589948629] [2023-03-31 00:12:43,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589948629] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:12:43,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181486814] [2023-03-31 00:12:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:43,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:12:43,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:12:43,364 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) [2023-03-31 00:12:43,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:12:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:43,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 00:12:43,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:12:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:43,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:12:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181486814] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:12:43,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:12:43,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2023-03-31 00:12:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950874612] [2023-03-31 00:12:43,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:12:43,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-31 00:12:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:12:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-31 00:12:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-03-31 00:12:43,735 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 12 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 00:12:44,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:12:44,003 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2023-03-31 00:12:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 00:12:44,004 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 37 [2023-03-31 00:12:44,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:12:44,005 INFO L225 Difference]: With dead ends: 87 [2023-03-31 00:12:44,005 INFO L226 Difference]: Without dead ends: 55 [2023-03-31 00:12:44,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-03-31 00:12:44,006 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 87 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:12:44,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 15 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:12:44,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-03-31 00:12:44,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2023-03-31 00:12:44,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 41 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:44,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-03-31 00:12:44,011 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 37 [2023-03-31 00:12:44,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:12:44,011 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-03-31 00:12:44,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2023-03-31 00:12:44,012 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-03-31 00:12:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 00:12:44,012 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:44,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:44,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 00:12:44,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:12:44,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:44,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash 139295531, now seen corresponding path program 1 times [2023-03-31 00:12:44,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:44,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792622138] [2023-03-31 00:12:44,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:44,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:12:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-03-31 00:12:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:44,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792622138] [2023-03-31 00:12:44,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792622138] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:12:44,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:12:44,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 00:12:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587818787] [2023-03-31 00:12:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:12:44,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:12:44,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:12:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:12:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:12:44,489 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:12:44,715 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-03-31 00:12:44,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-03-31 00:12:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2023-03-31 00:12:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:12:44,717 INFO L225 Difference]: With dead ends: 65 [2023-03-31 00:12:44,717 INFO L226 Difference]: Without dead ends: 50 [2023-03-31 00:12:44,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-03-31 00:12:44,721 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 90 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:12:44,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 11 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:12:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-03-31 00:12:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-03-31 00:12:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:44,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-03-31 00:12:44,726 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 42 [2023-03-31 00:12:44,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:12:44,727 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-03-31 00:12:44,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-31 00:12:44,727 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-03-31 00:12:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 00:12:44,727 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:44,728 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:44,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 00:12:44,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:44,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:44,728 INFO L85 PathProgramCache]: Analyzing trace with hash 619589434, now seen corresponding path program 1 times [2023-03-31 00:12:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223825332] [2023-03-31 00:12:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:45,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:12:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223825332] [2023-03-31 00:12:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223825332] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:12:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132805776] [2023-03-31 00:12:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:46,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:12:46,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:12:46,857 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) [2023-03-31 00:12:46,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:12:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:47,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 122 conjunts are in the unsatisfiable core [2023-03-31 00:12:47,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:12:47,214 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 [2023-03-31 00:12:47,248 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 [2023-03-31 00:12:47,425 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-03-31 00:12:47,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:47,475 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 [2023-03-31 00:12:47,730 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2023-03-31 00:12:47,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2023-03-31 00:12:47,886 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 37 treesize of output 21 [2023-03-31 00:12:47,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:12:47,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 00:12:47,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:12:49,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,034 INFO L321 Elim1Store]: treesize reduction 93, result has 30.1 percent of original size [2023-03-31 00:12:49,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 243 treesize of output 247 [2023-03-31 00:12:49,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,053 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 46 treesize of output 32 [2023-03-31 00:12:49,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 116 [2023-03-31 00:12:49,090 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 12 treesize of output 11 [2023-03-31 00:12:49,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,106 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-03-31 00:12:49,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-03-31 00:12:49,132 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 39 treesize of output 68 [2023-03-31 00:12:49,141 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 54 treesize of output 53 [2023-03-31 00:12:49,149 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 0 case distinctions, treesize of input 39 treesize of output 36 [2023-03-31 00:12:49,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:49,311 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2023-03-31 00:12:49,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 14451 treesize of output 10568 [2023-03-31 00:12:49,382 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 208 treesize of output 178 [2023-03-31 00:12:49,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:12:49,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:49,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:12:49,904 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_876 (Array Int Int)) (v_ArrVal_875 (Array Int Int)) (v_ArrVal_878 (Array Int Int)) (v_ArrVal_882 Int) (v_ArrVal_877 (Array Int Int)) (v_ArrVal_881 Int) (v_ArrVal_879 (Array Int Int)) (v_ArrVal_880 (Array Int Int)) (v_dll_insert_~new_node~0.base_12 Int)) (let ((.cse4 (store |c_#memory_$Pointer$.base| v_dll_insert_~new_node~0.base_12 v_ArrVal_878))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| v_dll_insert_~new_node~0.base_12 v_ArrVal_879)) (.cse3 (select (select .cse4 |c_main_~#s~0.base|) |c_main_~#s~0.offset|))) (let ((.cse0 (select .cse4 .cse3)) (.cse1 (+ 4 (select (select .cse5 |c_main_~#s~0.base|) |c_main_~#s~0.offset|)))) (or (not (= (select |c_#valid| v_dll_insert_~new_node~0.base_12) 0)) (not (= (select .cse0 .cse1) 0)) (= (select (select (store (let ((.cse2 (store |c_#memory_int| v_dll_insert_~new_node~0.base_12 v_ArrVal_880))) (store .cse2 .cse3 (store (select .cse2 .cse3) .cse1 v_ArrVal_881))) v_dll_insert_~new_node~0.base_12 v_ArrVal_875) (select (select (store (store .cse4 .cse3 (store .cse0 .cse1 v_dll_insert_~new_node~0.base_12)) v_dll_insert_~new_node~0.base_12 v_ArrVal_876) |c_main_~#s~0.base|) |c_main_~#s~0.offset|)) (select (select (store (store .cse5 .cse3 (store (select .cse5 .cse3) .cse1 v_ArrVal_882)) v_dll_insert_~new_node~0.base_12 v_ArrVal_877) |c_main_~#s~0.base|) |c_main_~#s~0.offset|)) c_main_~data~0) (<= |c_#StackHeapBarrier| v_dll_insert_~new_node~0.base_12)))))) is different from false [2023-03-31 00:12:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132805776] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:12:49,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-03-31 00:12:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 48 [2023-03-31 00:12:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974558852] [2023-03-31 00:12:49,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-03-31 00:12:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-03-31 00:12:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:12:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-03-31 00:12:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=2103, Unknown=7, NotChecked=92, Total=2352 [2023-03-31 00:12:49,909 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 48 states, 42 states have (on average 1.5) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:12:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:12:53,716 INFO L93 Difference]: Finished difference Result 101 states and 130 transitions. [2023-03-31 00:12:53,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-03-31 00:12:53,717 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 42 states have (on average 1.5) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 42 [2023-03-31 00:12:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:12:53,718 INFO L225 Difference]: With dead ends: 101 [2023-03-31 00:12:53,718 INFO L226 Difference]: Without dead ends: 99 [2023-03-31 00:12:53,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=454, Invalid=6339, Unknown=17, NotChecked=162, Total=6972 [2023-03-31 00:12:53,720 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 252 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 32 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:12:53,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 25 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1648 Invalid, 18 Unknown, 0 Unchecked, 2.1s Time] [2023-03-31 00:12:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-03-31 00:12:53,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 58. [2023-03-31 00:12:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-03-31 00:12:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-03-31 00:12:53,730 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 42 [2023-03-31 00:12:53,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:12:53,731 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-03-31 00:12:53,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 42 states have (on average 1.5) internal successors, (63), 38 states have internal predecessors, (63), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:12:53,731 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-03-31 00:12:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-03-31 00:12:53,731 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:12:53,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:12:53,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 00:12:53,939 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 [2023-03-31 00:12:53,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:12:53,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:12:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1155417928, now seen corresponding path program 1 times [2023-03-31 00:12:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:12:53,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399156695] [2023-03-31 00:12:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:53,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:12:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:55,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:12:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:55,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-03-31 00:12:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:55,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-03-31 00:12:55,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-03-31 00:12:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:56,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 00:12:56,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:12:56,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399156695] [2023-03-31 00:12:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399156695] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:12:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791926918] [2023-03-31 00:12:56,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:12:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:12:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:12:57,011 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) [2023-03-31 00:12:57,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:12:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:12:57,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 141 conjunts are in the unsatisfiable core [2023-03-31 00:12:57,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:12:57,621 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 [2023-03-31 00:12:57,762 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-03-31 00:12:57,762 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 [2023-03-31 00:12:57,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 00:12:57,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-03-31 00:12:57,856 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2023-03-31 00:12:57,969 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-03-31 00:12:57,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 50 [2023-03-31 00:12:57,978 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 [2023-03-31 00:12:57,983 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 [2023-03-31 00:12:58,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-03-31 00:12:58,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 38 [2023-03-31 00:12:58,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:58,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-03-31 00:12:58,382 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 11 treesize of output 7 [2023-03-31 00:12:58,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-03-31 00:12:59,181 WARN L861 $PredicateComparison]: unable to prove that (exists ((dll_insert_~new_node~0.base Int) (v_ArrVal_1182 Int) (v_ArrVal_1174 Int) (v_ArrVal_1169 (Array Int Int)) (v_ArrVal_1168 (Array Int Int)) (v_ArrVal_1167 (Array Int Int)) (v_ArrVal_1178 (Array Int Int)) (v_ArrVal_1175 (Array Int Int)) (v_ArrVal_1173 (Array Int Int)) (v_ArrVal_1172 (Array Int Int)) (v_ArrVal_1183 (Array Int Int))) (let ((.cse9 (store |c_old(#memory_$Pointer$.base)| dll_insert_~new_node~0.base v_ArrVal_1168))) (let ((.cse3 (store |c_old(#memory_$Pointer$.offset)| dll_insert_~new_node~0.base v_ArrVal_1167)) (.cse4 (select (select .cse9 |c_dll_insert_#in~head.base|) |c_dll_insert_#in~head.offset|))) (let ((.cse5 (select .cse3 .cse4)) (.cse6 (+ (select (select .cse3 |c_dll_insert_#in~head.base|) |c_dll_insert_#in~head.offset|) 4))) (let ((.cse1 (select (select .cse9 .cse4) .cse6)) (.cse2 (+ 8 (select .cse5 .cse6)))) (and (= (let ((.cse0 (store (store .cse3 .cse4 (store .cse5 .cse6 0)) dll_insert_~new_node~0.base v_ArrVal_1175))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 0))) |c_#memory_$Pointer$.offset|) (= (store (store (let ((.cse7 (store |c_old(#memory_int)| dll_insert_~new_node~0.base v_ArrVal_1169))) (store .cse7 .cse4 (store (select .cse7 .cse4) .cse6 v_ArrVal_1174))) dll_insert_~new_node~0.base v_ArrVal_1172) .cse1 v_ArrVal_1183) |c_#memory_int|) (= (select |c_old(#valid)| dll_insert_~new_node~0.base) 0) (= (let ((.cse8 (store (store .cse9 .cse4 v_ArrVal_1173) dll_insert_~new_node~0.base v_ArrVal_1178))) (store .cse8 .cse1 (store (select .cse8 .cse1) .cse2 v_ArrVal_1182))) |c_#memory_$Pointer$.base|) (<= (+ dll_insert_~new_node~0.base 1) |c_#StackHeapBarrier|))))))) is different from true [2023-03-31 00:12:59,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:12:59,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:10,073 WARN L223 SmtUtils]: Spent 10.83s on a formula simplification. DAG size of input: 294 DAG size of output: 86 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-03-31 00:13:10,074 INFO L321 Elim1Store]: treesize reduction 2739, result has 10.5 percent of original size [2023-03-31 00:13:10,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 14 new quantified variables, introduced 46 case distinctions, treesize of input 8297 treesize of output 7064 [2023-03-31 00:13:10,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:10,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:10,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:10,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:42,705 WARN L223 SmtUtils]: Spent 32.13s on a formula simplification. DAG size of input: 251 DAG size of output: 80 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-03-31 00:13:42,706 INFO L321 Elim1Store]: treesize reduction 1398, result has 15.2 percent of original size [2023-03-31 00:13:42,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 8 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 8280 treesize of output 8408 [2023-03-31 00:13:43,042 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 4116 treesize of output 3789 [2023-03-31 00:13:43,919 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 2387 treesize of output 2606 [2023-03-31 00:13:44,263 INFO L217 Elim1Store]: Index analysis took 144 ms [2023-03-31 00:13:45,023 INFO L321 Elim1Store]: treesize reduction 8, result has 65.2 percent of original size [2023-03-31 00:13:45,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 24 [2023-03-31 00:13:45,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:45,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:45,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-03-31 00:13:45,980 INFO L173 IndexEqualityManager]: detected equality via solver