/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:25:13,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:25:13,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:25:13,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:25:13,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:25:13,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:25:13,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:25:13,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:25:13,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:25:13,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:25:13,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:25:13,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:25:13,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:25:13,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:25:13,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:25:13,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:25:13,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:25:13,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:25:13,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:25:13,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:25:13,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:25:13,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:25:13,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:25:13,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:25:13,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:25:13,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:25:13,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:25:13,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:25:13,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:25:13,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:25:13,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:25:13,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:25:13,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:25:13,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:25:13,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:25:13,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:25:13,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:25:13,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:25:13,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:25:13,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:25:13,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:25:13,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:25:13,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:25:13,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:25:13,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:25:13,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:25:13,839 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:25:13,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:25:13,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:25:13,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:25:13,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:25:13,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:25:13,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:25:13,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:25:13,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:25:13,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:25:13,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:25:13,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:25:13,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:25:13,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:25:13,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:25:13,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:25:13,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:25:13,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:25:13,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:25:13,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:25:13,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:25:13,843 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:25:13,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:25:13,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:25:13,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:25:13,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:25:14,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:25:14,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:25:14,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:25:14,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:25:14,335 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:25:14,337 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 13:25:14,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed18c3fc1/a0f8a39b3f924a0d848663bdff234d0e/FLAG5881065c7 [2020-09-04 13:25:15,039 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:25:15,040 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 13:25:15,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed18c3fc1/a0f8a39b3f924a0d848663bdff234d0e/FLAG5881065c7 [2020-09-04 13:25:15,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed18c3fc1/a0f8a39b3f924a0d848663bdff234d0e [2020-09-04 13:25:15,307 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:25:15,309 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:25:15,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:15,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:25:15,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:25:15,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:15" (1/1) ... [2020-09-04 13:25:15,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b1442d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:15, skipping insertion in model container [2020-09-04 13:25:15,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:15" (1/1) ... [2020-09-04 13:25:15,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:25:15,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:25:15,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:15,906 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:25:15,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:16,036 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:25:16,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16 WrapperNode [2020-09-04 13:25:16,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:16,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:25:16,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:25:16,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:25:16,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... [2020-09-04 13:25:16,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:25:16,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:25:16,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:25:16,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:25:16,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:25:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:25:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:25:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 13:25:16,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 13:25:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 13:25:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-04 13:25:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-04 13:25:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-04 13:25:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-04 13:25:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-04 13:25:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-04 13:25:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-04 13:25:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-04 13:25:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-04 13:25:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-04 13:25:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-04 13:25:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-04 13:25:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-04 13:25:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-04 13:25:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-04 13:25:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-04 13:25:16,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:25:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:25:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 13:25:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 13:25:16,235 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 13:25:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 13:25:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 13:25:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 13:25:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 13:25:16,236 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 13:25:16,237 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 13:25:16,238 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 13:25:16,239 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 13:25:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 13:25:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 13:25:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 13:25:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 13:25:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 13:25:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 13:25:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 13:25:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 13:25:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 13:25:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 13:25:16,250 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 13:25:16,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:25:16,252 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-04 13:25:16,253 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-04 13:25:16,254 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-04 13:25:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:25:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:25:16,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:25:17,226 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:25:17,226 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-04 13:25:17,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:17 BoogieIcfgContainer [2020-09-04 13:25:17,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:25:17,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:25:17,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:25:17,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:25:17,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:25:15" (1/3) ... [2020-09-04 13:25:17,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705e756e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:17, skipping insertion in model container [2020-09-04 13:25:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:16" (2/3) ... [2020-09-04 13:25:17,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705e756e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:17, skipping insertion in model container [2020-09-04 13:25:17,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:17" (3/3) ... [2020-09-04 13:25:17,252 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-09-04 13:25:17,263 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:25:17,275 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:25:17,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:25:17,338 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:25:17,338 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:25:17,338 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:25:17,338 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:25:17,339 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:25:17,339 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:25:17,339 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:25:17,339 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:25:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-09-04 13:25:17,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 13:25:17,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:17,383 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 13:25:17,383 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:17,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-09-04 13:25:17,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:17,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403803591] [2020-09-04 13:25:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:25:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:17,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:25:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-04 13:25:17,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403803591] [2020-09-04 13:25:17,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:17,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:25:17,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483930903] [2020-09-04 13:25:17,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:25:17,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:17,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:25:17,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:25:17,992 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-09-04 13:25:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:18,478 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-09-04 13:25:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 13:25:18,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-09-04 13:25:18,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:18,498 INFO L225 Difference]: With dead ends: 343 [2020-09-04 13:25:18,498 INFO L226 Difference]: Without dead ends: 166 [2020-09-04 13:25:18,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:25:18,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-04 13:25:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-09-04 13:25:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-04 13:25:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-09-04 13:25:18,587 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-09-04 13:25:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:18,588 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-09-04 13:25:18,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:25:18,588 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-09-04 13:25:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-04 13:25:18,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:18,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 13:25:18,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:25:18,593 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:18,594 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-09-04 13:25:18,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:18,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108333918] [2020-09-04 13:25:18,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:25:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:25:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 13:25:19,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108333918] [2020-09-04 13:25:19,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218786651] [2020-09-04 13:25:19,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:25:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:19,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-04 13:25:19,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:25:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-04 13:25:19,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:25:19,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 13 [2020-09-04 13:25:19,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990896486] [2020-09-04 13:25:19,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 13:25:19,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:19,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 13:25:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 13:25:19,590 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-09-04 13:25:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:20,880 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-09-04 13:25:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 13:25:20,881 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-09-04 13:25:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:20,884 INFO L225 Difference]: With dead ends: 327 [2020-09-04 13:25:20,884 INFO L226 Difference]: Without dead ends: 179 [2020-09-04 13:25:20,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:25:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-04 13:25:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-09-04 13:25:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-04 13:25:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-09-04 13:25:20,922 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-09-04 13:25:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:20,922 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-09-04 13:25:20,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 13:25:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-09-04 13:25:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 13:25:20,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:20,937 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:21,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:25:21,139 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:21,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-09-04 13:25:21,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:21,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822771906] [2020-09-04 13:25:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:25:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:21,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:25:22,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:25:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-04 13:25:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:22,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:25:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:25:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:25:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:25:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-04 13:25:23,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822771906] [2020-09-04 13:25:23,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719447473] [2020-09-04 13:25:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:25:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:23,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 58 conjunts are in the unsatisfiable core [2020-09-04 13:25:23,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:25:23,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-09-04 13:25:23,678 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:25:23,694 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:25:23,696 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:25:23,696 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2020-09-04 13:25:23,718 INFO L384 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 4 [2020-09-04 13:25:23,719 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:25:23,724 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:25:23,726 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:25:23,726 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:3 [2020-09-04 13:25:25,829 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_#memory_$Pointer$.base|))) is different from true [2020-09-04 13:25:39,759 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-09-04 13:25:41,794 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) c_dll_insert_slave_~next~0.base))) is different from true [2020-09-04 13:25:43,819 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_dll_insert_slave_#in~dll.base|) |c_dll_insert_slave_#in~dll.offset|) 0))) is different from true [2020-09-04 13:25:45,859 WARN L860 $PredicateComparison]: unable to prove that (exists ((alloc_or_die_slave_~ptr~0.offset Int) (alloc_or_die_slave_~ptr~0.base Int)) (and (<= (+ alloc_or_die_slave_~ptr~0.base 1) |c_#StackHeapBarrier|) (= (select (select (store |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base (store (store (select |c_old(#memory_$Pointer$.base)| alloc_or_die_slave_~ptr~0.base) alloc_or_die_slave_~ptr~0.offset 0) (+ alloc_or_die_slave_~ptr~0.offset 4) 0)) |c_##fun~$Pointer$~TO~VOID_#in~9.base|) |c_##fun~$Pointer$~TO~VOID_#in~9.offset|) 0))) is different from true [2020-09-04 13:25:45,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-09-04 13:25:45,920 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:25:45,921 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:25:45,922 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:25:45,922 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:39, output treesize:1 [2020-09-04 13:25:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 108 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 8 not checked. [2020-09-04 13:25:46,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:25:46,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22] total 36 [2020-09-04 13:25:46,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076989654] [2020-09-04 13:25:46,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-09-04 13:25:46,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:46,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-09-04 13:25:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=907, Unknown=10, NotChecked=252, Total=1260 [2020-09-04 13:25:46,005 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 36 states. [2020-09-04 13:25:53,328 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-09-04 13:25:55,423 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 28 [2020-09-04 13:25:59,534 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-09-04 13:26:05,154 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-09-04 13:26:13,196 WARN L193 SmtUtils]: Spent 3.87 s on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-09-04 13:26:19,239 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-09-04 13:26:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:26:24,206 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-09-04 13:26:24,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 13:26:24,207 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 154 [2020-09-04 13:26:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:26:24,211 INFO L225 Difference]: With dead ends: 348 [2020-09-04 13:26:24,211 INFO L226 Difference]: Without dead ends: 189 [2020-09-04 13:26:24,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 191 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=230, Invalid=2220, Unknown=16, NotChecked=396, Total=2862 [2020-09-04 13:26:24,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-04 13:26:24,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-09-04 13:26:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 13:26:24,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-09-04 13:26:24,236 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-09-04 13:26:24,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:26:24,237 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-09-04 13:26:24,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-09-04 13:26:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-09-04 13:26:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-04 13:26:24,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:26:24,240 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:26:24,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:26:24,450 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:26:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:26:24,451 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-09-04 13:26:24,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:26:24,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979935391] [2020-09-04 13:26:24,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:26:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:24,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:26:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:24,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:26:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:26:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-04 13:26:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:26:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:25,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:26:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:26,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:26,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-09-04 13:26:26,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979935391] [2020-09-04 13:26:26,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855114587] [2020-09-04 13:26:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:26:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:26,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 48 conjunts are in the unsatisfiable core [2020-09-04 13:26:26,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:26:26,803 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:26:26,803 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 47 [2020-09-04 13:26:26,804 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:26:26,841 INFO L625 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-09-04 13:26:26,845 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:26:26,845 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:36, output treesize:8 [2020-09-04 13:26:26,972 INFO L384 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 8 [2020-09-04 13:26:26,973 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-04 13:26:26,974 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-04 13:26:26,975 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-09-04 13:26:26,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2020-09-04 13:26:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-09-04 13:26:27,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:26:27,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 32 [2020-09-04 13:26:27,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446378286] [2020-09-04 13:26:27,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 13:26:27,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:26:27,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 13:26:27,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=922, Unknown=0, NotChecked=0, Total=992 [2020-09-04 13:26:27,160 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 32 states. [2020-09-04 13:26:29,345 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2020-09-04 13:26:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:26:32,037 INFO L93 Difference]: Finished difference Result 428 states and 516 transitions. [2020-09-04 13:26:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-04 13:26:32,038 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 154 [2020-09-04 13:26:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:26:32,042 INFO L225 Difference]: With dead ends: 428 [2020-09-04 13:26:32,042 INFO L226 Difference]: Without dead ends: 256 [2020-09-04 13:26:32,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=242, Invalid=2728, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 13:26:32,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-04 13:26:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 213. [2020-09-04 13:26:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 13:26:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 252 transitions. [2020-09-04 13:26:32,069 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 252 transitions. Word has length 154 [2020-09-04 13:26:32,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:26:32,070 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 252 transitions. [2020-09-04 13:26:32,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 13:26:32,070 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 252 transitions. [2020-09-04 13:26:32,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-04 13:26:32,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:26:32,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 13:26:32,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:26:32,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:26:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:26:32,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-09-04 13:26:32,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:26:32,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242104660] [2020-09-04 13:26:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:26:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:32,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:32,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-04 13:26:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:33,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:33,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:34,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:26:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:34,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:35,454 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-09-04 13:26:36,302 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-09-04 13:26:36,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:36,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 13:26:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-04 13:26:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:37,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:26:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:38,419 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-09-04 13:26:38,599 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-09-04 13:26:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 13:26:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:39,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-04 13:26:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:26:40,126 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-09-04 13:26:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:26:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:27:46,977 WARN L193 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 449 DAG size of output: 50