/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:46:41,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:46:41,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:46:41,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:46:41,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:46:41,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:46:41,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:46:41,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:46:41,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:46:41,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:46:41,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:46:41,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:46:41,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:46:41,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:46:41,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:46:41,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:46:41,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:46:41,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:46:41,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:46:41,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:46:41,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:46:41,438 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:46:41,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:46:41,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:46:41,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:46:41,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:46:41,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:46:41,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:46:41,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:46:41,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:46:41,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:46:41,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:46:41,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:46:41,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:46:41,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:46:41,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:46:41,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:46:41,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:46:41,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:46:41,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:46:41,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:46:41,461 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 [2020-08-19 02:46:41,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:46:41,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:46:41,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:46:41,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:46:41,520 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:46:41,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:46:41,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:46:41,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:46:41,522 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:46:41,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:46:41,522 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:46:41,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:46:41,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:46:41,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:46:41,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:46:41,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:46:41,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:46:41,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:46:41,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:46:41,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:46:41,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:46:41,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:46:41,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:46:41,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:46:41,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:46:41,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:46:41,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:46:41,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:46:41,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:46:41,867 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:46:41,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-19 02:46:41,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcbaa84a0/4393f7c39a3a4e26bbf1cce60cbcc1e1/FLAGd33bcfe0d [2020-08-19 02:46:42,444 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:46:42,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-19 02:46:42,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcbaa84a0/4393f7c39a3a4e26bbf1cce60cbcc1e1/FLAGd33bcfe0d [2020-08-19 02:46:42,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcbaa84a0/4393f7c39a3a4e26bbf1cce60cbcc1e1 [2020-08-19 02:46:42,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:46:42,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:46:42,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:42,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:46:42,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:46:42,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:42" (1/1) ... [2020-08-19 02:46:42,791 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 19.08 02:46:42, skipping insertion in model container [2020-08-19 02:46:42,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:42" (1/1) ... [2020-08-19 02:46:42,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:46:42,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:46:43,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:43,461 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:46:43,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:43,607 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:46:43,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43 WrapperNode [2020-08-19 02:46:43,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:43,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:46:43,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:46:43,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:46:43,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (1/1) ... [2020-08-19 02:46:43,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:46:43,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:46:43,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:46:43,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:46:43,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (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 [2020-08-19 02:46:43,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:46:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:46:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 02:46:43,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 02:46:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 02:46:43,784 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 02:46:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 02:46:43,785 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 02:46:43,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 02:46:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 02:46:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 02:46:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 02:46:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 02:46:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 02:46:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 02:46:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 02:46:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 02:46:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 02:46:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 02:46:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 02:46:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 02:46:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:46:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:46:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 02:46:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 02:46:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 02:46:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 02:46:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 02:46:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 02:46:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 02:46:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 02:46:43,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 02:46:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 02:46:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 02:46:43,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 02:46:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 02:46:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 02:46:43,799 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 02:46:43,800 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 02:46:43,801 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 02:46:43,802 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:46:43,803 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 02:46:43,804 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 02:46:43,805 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 02:46:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 02:46:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 02:46:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 02:46:43,809 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 02:46:43,810 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 02:46:43,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 02:46:43,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 02:46:43,813 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 02:46:43,814 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 02:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:46:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:46:44,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:46:44,656 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 02:46:44,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:44 BoogieIcfgContainer [2020-08-19 02:46:44,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:46:44,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:46:44,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:46:44,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:46:44,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:46:42" (1/3) ... [2020-08-19 02:46:44,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21223e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:44, skipping insertion in model container [2020-08-19 02:46:44,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:43" (2/3) ... [2020-08-19 02:46:44,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21223e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:44, skipping insertion in model container [2020-08-19 02:46:44,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:44" (3/3) ... [2020-08-19 02:46:44,669 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-19 02:46:44,680 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:46:44,689 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:46:44,704 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:46:44,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:46:44,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:46:44,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:46:44,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:46:44,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:46:44,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:46:44,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:46:44,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:46:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 02:46:44,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:46:44,765 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:44,767 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] [2020-08-19 02:46:44,767 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:44,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 02:46:44,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:44,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594662926] [2020-08-19 02:46:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:46:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:45,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:46:45,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594662926] [2020-08-19 02:46:45,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:45,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:46:45,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628485375] [2020-08-19 02:46:45,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:46:45,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:45,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:46:45,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:46:45,319 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 02:46:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:45,856 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 02:46:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:46:45,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 02:46:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:45,872 INFO L225 Difference]: With dead ends: 343 [2020-08-19 02:46:45,873 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 02:46:45,880 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 [2020-08-19 02:46:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 02:46:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 02:46:45,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 02:46:45,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 02:46:45,953 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 02:46:45,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:45,954 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 02:46:45,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:46:45,954 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 02:46:45,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:46:45,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:45,958 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] [2020-08-19 02:46:45,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:46:45,959 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:45,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:45,959 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 02:46:45,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:45,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855215633] [2020-08-19 02:46:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:46:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 02:46:46,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855215633] [2020-08-19 02:46:46,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:46:46,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:46:46,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20635201] [2020-08-19 02:46:46,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:46:46,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:46,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:46:46,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:46:46,481 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 02:46:47,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:47,654 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 02:46:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:46:47,655 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 02:46:47,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:47,661 INFO L225 Difference]: With dead ends: 327 [2020-08-19 02:46:47,661 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 02:46:47,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-19 02:46:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 02:46:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 02:46:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 02:46:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 02:46:47,690 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 02:46:47,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:47,690 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 02:46:47,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:46:47,691 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 02:46:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 02:46:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:47,697 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] [2020-08-19 02:46:47,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:46:47,697 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:47,698 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 02:46:47,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:47,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325243840] [2020-08-19 02:46:47,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:46:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:46:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:49,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 02:46:49,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325243840] [2020-08-19 02:46:49,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:46:49,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-19 02:46:49,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325817037] [2020-08-19 02:46:49,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-19 02:46:49,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:49,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-19 02:46:49,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-19 02:46:49,643 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-19 02:46:53,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:53,429 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-19 02:46:53,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:46:53,429 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-19 02:46:53,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:53,432 INFO L225 Difference]: With dead ends: 358 [2020-08-19 02:46:53,433 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 02:46:53,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 02:46:53,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 02:46:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-19 02:46:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 02:46:53,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 02:46:53,478 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 02:46:53,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:53,481 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 02:46:53,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-19 02:46:53,482 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 02:46:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 02:46:53,488 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:53,488 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] [2020-08-19 02:46:53,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:46:53,488 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 02:46:53,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:53,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626221877] [2020-08-19 02:46:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:53,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:46:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:53,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:53,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:46:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-19 02:46:54,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626221877] [2020-08-19 02:46:54,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:46:54,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 02:46:54,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644798494] [2020-08-19 02:46:54,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 02:46:54,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:54,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 02:46:54,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:46:54,631 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-19 02:46:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:56,934 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-19 02:46:56,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:46:56,936 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 02:46:56,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:56,940 INFO L225 Difference]: With dead ends: 375 [2020-08-19 02:46:56,940 INFO L226 Difference]: Without dead ends: 202 [2020-08-19 02:46:56,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:46:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-19 02:46:56,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-19 02:46:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-19 02:46:56,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-19 02:46:56,963 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-19 02:46:56,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:56,964 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-19 02:46:56,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 02:46:56,964 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-19 02:46:56,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 02:46:56,967 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:56,967 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] [2020-08-19 02:46:56,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:46:56,967 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:56,968 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 02:46:56,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:56,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206497921] [2020-08-19 02:46:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:46:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:57,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:46:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:46:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:46:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:46:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:46:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-19 02:46:58,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206497921] [2020-08-19 02:46:58,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:46:58,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 02:46:58,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388623630] [2020-08-19 02:46:58,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 02:46:58,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:58,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 02:46:58,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 02:46:58,747 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-19 02:47:00,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:47:00,979 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-19 02:47:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 02:47:00,980 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 02:47:00,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:47:00,984 INFO L225 Difference]: With dead ends: 327 [2020-08-19 02:47:00,984 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 02:47:00,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 02:47:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 02:47:01,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-19 02:47:01,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-19 02:47:01,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-19 02:47:01,007 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-19 02:47:01,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:47:01,008 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-19 02:47:01,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 02:47:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-19 02:47:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 02:47:01,011 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:47:01,011 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] [2020-08-19 02:47:01,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:47:01,012 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:47:01,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:47:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 02:47:01,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:47:01,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519612701] [2020-08-19 02:47:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:47:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:01,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 02:47:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:01,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:01,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:01,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:47:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:47:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:47:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 02:47:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:47:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 02:47:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:47:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:02,856 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-19 02:47:03,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:47:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:03,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:47:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:04,280 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-19 02:47:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:47:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:47:16,755 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 257 DAG size of output: 48