/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 21:22:44,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:22:44,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:22:44,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:22:44,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:22:44,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:22:44,748 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:22:44,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:22:44,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:22:44,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:22:44,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:22:44,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:22:44,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:22:44,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:22:44,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:22:44,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:22:44,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:22:44,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:22:44,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:22:44,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:22:44,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:22:44,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:22:44,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:22:44,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:22:44,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:22:44,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:22:44,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:22:44,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:22:44,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:22:44,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:22:44,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:22:44,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:22:44,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:22:44,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:22:44,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:22:44,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:22:44,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:22:44,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:22:44,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:22:44,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:22:44,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:22:44,798 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 [2020-08-21 21:22:44,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:22:44,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:22:44,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:22:44,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:22:44,845 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:22:44,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:22:44,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 21:22:44,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:22:44,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 21:22:44,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:22:44,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:22:44,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:22:44,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:22:44,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 21:22:44,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:22:44,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:22:44,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:22:44,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:22:44,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:22:44,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:22:44,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:22:44,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:22:44,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:22:44,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:22:44,852 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=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-08-21 21:22:45,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:22:45,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:22:45,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:22:45,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:22:45,157 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:22:45,157 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 21:22:45,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195257664/81e11ae11b4d45c68ad0f4d1a5d748eb/FLAG51b1c9cd1 [2020-08-21 21:22:45,790 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:22:45,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 21:22:45,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195257664/81e11ae11b4d45c68ad0f4d1a5d748eb/FLAG51b1c9cd1 [2020-08-21 21:22:46,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/195257664/81e11ae11b4d45c68ad0f4d1a5d748eb [2020-08-21 21:22:46,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:22:46,116 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:22:46,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:22:46,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:22:46,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:22:46,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a477604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46, skipping insertion in model container [2020-08-21 21:22:46,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:22:46,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:22:46,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:22:46,666 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:22:46,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:22:46,803 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:22:46,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46 WrapperNode [2020-08-21 21:22:46,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:22:46,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:22:46,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:22:46,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:22:46,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (1/1) ... [2020-08-21 21:22:46,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:22:46,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:22:46,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:22:46,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:22:46,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (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 [2020-08-21 21:22:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:22:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:22:46,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 21:22:46,975 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 21:22:46,976 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 21:22:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 21:22:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 21:22:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 21:22:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 21:22:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 21:22:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 21:22:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:22:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:22:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 21:22:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 21:22:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 21:22:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 21:22:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 21:22:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 21:22:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 21:22:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 21:22:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 21:22:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 21:22:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 21:22:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 21:22:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 21:22:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 21:22:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 21:22:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 21:22:46,985 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 21:22:46,986 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 21:22:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 21:22:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 21:22:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 21:22:46,987 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 21:22:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 21:22:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 21:22:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 21:22:46,988 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 21:22:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 21:22:46,989 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 21:22:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 21:22:46,990 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 21:22:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:22:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 21:22:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 21:22:46,991 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:22:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 21:22:46,992 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 21:22:46,993 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 21:22:46,994 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 21:22:46,995 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 21:22:46,996 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 21:22:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 21:22:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 21:22:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 21:22:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 21:22:46,997 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 21:22:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 21:22:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 21:22:46,998 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 21:22:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 21:22:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 21:22:46,999 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 21:22:47,000 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 21:22:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 21:22:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:22:47,001 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 21:22:47,002 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 21:22:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:22:47,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:22:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 21:22:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 21:22:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:22:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 21:22:47,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:22:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 21:22:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 21:22:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:22:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 21:22:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 21:22:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 21:22:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 21:22:47,014 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:22:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:22:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:22:47,827 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:22:47,827 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 21:22:47,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:22:47 BoogieIcfgContainer [2020-08-21 21:22:47,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:22:47,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:22:47,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:22:47,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:22:47,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:22:46" (1/3) ... [2020-08-21 21:22:47,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219ed90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:22:47, skipping insertion in model container [2020-08-21 21:22:47,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:22:46" (2/3) ... [2020-08-21 21:22:47,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219ed90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:22:47, skipping insertion in model container [2020-08-21 21:22:47,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:22:47" (3/3) ... [2020-08-21 21:22:47,840 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 21:22:47,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:22:47,857 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:22:47,870 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:22:47,892 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:22:47,893 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:22:47,893 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:22:47,893 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:22:47,893 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:22:47,893 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:22:47,893 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:22:47,893 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:22:47,914 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 21:22:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 21:22:47,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:22:47,922 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] [2020-08-21 21:22:47,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:22:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:22:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 21:22:47,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:22:47,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758181858] [2020-08-21 21:22:47,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:22:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:22:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-21 21:22:48,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758181858] [2020-08-21 21:22:48,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:22:48,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 21:22:48,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810775614] [2020-08-21 21:22:48,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 21:22:48,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:22:48,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 21:22:48,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 21:22:48,448 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 21:22:48,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:22:48,832 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 21:22:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 21:22:48,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 21:22:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:22:48,848 INFO L225 Difference]: With dead ends: 343 [2020-08-21 21:22:48,848 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 21:22:48,855 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 [2020-08-21 21:22:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 21:22:48,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 21:22:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 21:22:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 21:22:48,925 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 21:22:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:22:48,926 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 21:22:48,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 21:22:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 21:22:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 21:22:48,930 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:22:48,930 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] [2020-08-21 21:22:48,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:22:48,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:22:48,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:22:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 21:22:48,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:22:48,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238664825] [2020-08-21 21:22:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:22:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:22:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 21:22:49,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238664825] [2020-08-21 21:22:49,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:22:49,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 21:22:49,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370713482] [2020-08-21 21:22:49,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 21:22:49,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:22:49,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 21:22:49,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 21:22:49,500 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 21:22:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:22:50,613 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 21:22:50,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 21:22:50,613 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 21:22:50,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:22:50,616 INFO L225 Difference]: With dead ends: 327 [2020-08-21 21:22:50,616 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 21:22:50,618 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 [2020-08-21 21:22:50,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 21:22:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 21:22:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 21:22:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 21:22:50,642 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 21:22:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:22:50,642 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 21:22:50,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 21:22:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 21:22:50,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 21:22:50,647 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:22:50,647 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] [2020-08-21 21:22:50,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:22:50,648 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:22:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:22:50,648 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 21:22:50,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:22:50,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752921744] [2020-08-21 21:22:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:22:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:50,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:22:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:22:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:51,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:22:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:22:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-21 21:22:52,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752921744] [2020-08-21 21:22:52,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:22:52,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 21:22:52,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148035667] [2020-08-21 21:22:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 21:22:52,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:22:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 21:22:52,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 21:22:52,332 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 21:22:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:22:55,773 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 21:22:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 21:22:55,774 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 21:22:55,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:22:55,779 INFO L225 Difference]: With dead ends: 358 [2020-08-21 21:22:55,779 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 21:22:55,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 21:22:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 21:22:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 21:22:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 21:22:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 21:22:55,805 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 21:22:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:22:55,806 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 21:22:55,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 21:22:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 21:22:55,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 21:22:55,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:22:55,809 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] [2020-08-21 21:22:55,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:22:55,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:22:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:22:55,810 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 21:22:55,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:22:55,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468195977] [2020-08-21 21:22:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:22:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:55,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:55,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:22:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:22:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:22:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:22:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-21 21:22:56,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468195977] [2020-08-21 21:22:56,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:22:56,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 21:22:56,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608340171] [2020-08-21 21:22:56,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 21:22:56,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:22:56,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 21:22:56,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 21:22:56,873 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 21:22:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:22:58,946 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 21:22:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 21:22:58,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 21:22:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:22:58,950 INFO L225 Difference]: With dead ends: 375 [2020-08-21 21:22:58,950 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 21:22:58,952 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 [2020-08-21 21:22:58,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 21:22:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 21:22:58,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 21:22:58,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 21:22:58,973 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 21:22:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:22:58,973 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 21:22:58,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 21:22:58,974 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 21:22:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 21:22:58,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:22:58,976 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] [2020-08-21 21:22:58,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:22:58,977 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:22:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:22:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 21:22:58,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:22:58,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511264593] [2020-08-21 21:22:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:22:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:22:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:22:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:22:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:22:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:22:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:22:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:22:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:22:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:23:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:23:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-21 21:23:00,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511264593] [2020-08-21 21:23:00,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:23:00,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 21:23:00,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634508242] [2020-08-21 21:23:00,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 21:23:00,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:23:00,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 21:23:00,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 21:23:00,314 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 21:23:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:23:02,380 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 21:23:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 21:23:02,380 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 21:23:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:23:02,387 INFO L225 Difference]: With dead ends: 327 [2020-08-21 21:23:02,387 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 21:23:02,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 21:23:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 21:23:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 21:23:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 21:23:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 21:23:02,426 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 21:23:02,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:23:02,429 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 21:23:02,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 21:23:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 21:23:02,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 21:23:02,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:23:02,439 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] [2020-08-21 21:23:02,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:23:02,440 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:23:02,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:23:02,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 21:23:02,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:23:02,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038120781] [2020-08-21 21:23:02,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:23:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:02,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 21:23:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:02,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:23:03,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 21:23:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 21:23:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 21:23:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:04,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:23:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 21:23:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:05,168 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 21:23:05,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:23:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:23:17,242 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 257 DAG size of output: 48