/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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 23:48:10,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:48:10,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:48:10,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:48:10,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:48:10,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:48:10,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:48:10,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:48:10,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:48:10,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:48:10,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:48:10,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:48:10,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:48:10,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:48:10,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:48:10,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:48:10,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:48:10,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:48:10,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:48:10,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:48:10,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:48:10,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:48:10,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:48:10,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:48:10,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:48:10,713 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:48:10,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:48:10,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:48:10,715 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:48:10,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:48:10,716 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:48:10,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:48:10,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:48:10,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:48:10,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:48:10,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:48:10,720 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:48:10,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:48:10,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:48:10,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:48:10,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:48:10,725 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 23:48:10,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:48:10,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:48:10,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:48:10,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:48:10,769 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:48:10,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:48:10,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:48:10,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:48:10,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:48:10,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:48:10,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:48:10,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:48:10,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:48:10,773 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:48:10,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:48:10,773 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:48:10,773 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:48:10,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:48:10,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:48:10,774 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:48:10,774 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:48:10,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:48:10,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:48:10,775 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:48:10,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:48:10,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:48:10,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:48:10,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:48:10,776 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:48:10,776 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:48:11,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:48:11,109 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:48:11,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:48:11,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:48:11,114 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:48:11,115 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 23:48:11,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0512c1e39/47cb56c9bdc94c338c20ede3fe6acada/FLAGf7277e719 [2020-08-21 23:48:11,734 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:48:11,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 23:48:11,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0512c1e39/47cb56c9bdc94c338c20ede3fe6acada/FLAGf7277e719 [2020-08-21 23:48:11,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0512c1e39/47cb56c9bdc94c338c20ede3fe6acada [2020-08-21 23:48:12,000 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:48:12,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:48:12,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:48:12,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:48:12,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:48:12,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:48:11" (1/1) ... [2020-08-21 23:48:12,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ccabf70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12, skipping insertion in model container [2020-08-21 23:48:12,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:48:11" (1/1) ... [2020-08-21 23:48:12,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:48:12,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:48:12,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:48:12,611 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:48:12,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:48:12,761 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:48:12,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12 WrapperNode [2020-08-21 23:48:12,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:48:12,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:48:12,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:48:12,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:48:12,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (1/1) ... [2020-08-21 23:48:12,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:48:12,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:48:12,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:48:12,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:48:12,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (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 23:48:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:48:12,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:48:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 23:48:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 23:48:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 23:48:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 23:48:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 23:48:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 23:48:12,935 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 23:48:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 23:48:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 23:48:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 23:48:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 23:48:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 23:48:12,937 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 23:48:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 23:48:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 23:48:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 23:48:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 23:48:12,938 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 23:48:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 23:48:12,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:48:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:48:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 23:48:12,940 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 23:48:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 23:48:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 23:48:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 23:48:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 23:48:12,943 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 23:48:12,944 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 23:48:12,945 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 23:48:12,946 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 23:48:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 23:48:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 23:48:12,947 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 23:48:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 23:48:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 23:48:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 23:48:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 23:48:12,948 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 23:48:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 23:48:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 23:48:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 23:48:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 23:48:12,949 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 23:48:12,950 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 23:48:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 23:48:12,951 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 23:48:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 23:48:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 23:48:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 23:48:12,952 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 23:48:12,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 23:48:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 23:48:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 23:48:12,954 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 23:48:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:48:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 23:48:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 23:48:12,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:48:12,956 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 23:48:12,957 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 23:48:12,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 23:48:12,959 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 23:48:12,960 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 23:48:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 23:48:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 23:48:12,961 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 23:48:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 23:48:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 23:48:12,962 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 23:48:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 23:48:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 23:48:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 23:48:12,963 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 23:48:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 23:48:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 23:48:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 23:48:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 23:48:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:48:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 23:48:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 23:48:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:48:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:48:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 23:48:12,969 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 23:48:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:48:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 23:48:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 23:48:12,979 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 23:48:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 23:48:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 23:48:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 23:48:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:48:12,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:48:12,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:48:13,817 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:48:13,817 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 23:48:13,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:48:13 BoogieIcfgContainer [2020-08-21 23:48:13,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:48:13,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:48:13,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:48:13,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:48:13,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:48:11" (1/3) ... [2020-08-21 23:48:13,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d6e1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:48:13, skipping insertion in model container [2020-08-21 23:48:13,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:48:12" (2/3) ... [2020-08-21 23:48:13,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d6e1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:48:13, skipping insertion in model container [2020-08-21 23:48:13,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:48:13" (3/3) ... [2020-08-21 23:48:13,834 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 23:48:13,845 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:48:13,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:48:13,871 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:48:13,908 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:48:13,908 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:48:13,908 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:48:13,908 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:48:13,909 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:48:13,909 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:48:13,909 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:48:13,909 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:48:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 23:48:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 23:48:13,952 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:13,954 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 23:48:13,955 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 23:48:13,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:13,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342350402] [2020-08-21 23:48:13,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:14,432 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 23:48:14,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342350402] [2020-08-21 23:48:14,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:48:14,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:48:14,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629264271] [2020-08-21 23:48:14,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:48:14,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:14,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:48:14,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:48:14,460 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 23:48:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:14,917 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 23:48:14,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:48:14,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 23:48:14,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:14,934 INFO L225 Difference]: With dead ends: 343 [2020-08-21 23:48:14,934 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 23:48:14,942 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 23:48:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 23:48:15,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 23:48:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 23:48:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 23:48:15,024 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 23:48:15,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:15,025 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 23:48:15,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:48:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 23:48:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 23:48:15,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:15,030 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 23:48:15,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:48:15,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:15,033 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 23:48:15,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:15,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650557501] [2020-08-21 23:48:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:15,501 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 23:48:15,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650557501] [2020-08-21 23:48:15,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:15,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 23:48:15,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527371174] [2020-08-21 23:48:15,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 23:48:15,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:15,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 23:48:15,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 23:48:15,511 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 23:48:16,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:16,777 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 23:48:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:48:16,779 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 23:48:16,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:16,782 INFO L225 Difference]: With dead ends: 327 [2020-08-21 23:48:16,782 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 23:48:16,787 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 23:48:16,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 23:48:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 23:48:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 23:48:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 23:48:16,834 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 23:48:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:16,835 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 23:48:16,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 23:48:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 23:48:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 23:48:16,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:16,848 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 23:48:16,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:48:16,849 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:16,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 23:48:16,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:16,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865577757] [2020-08-21 23:48:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:48:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:18,534 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 23:48:18,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865577757] [2020-08-21 23:48:18,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:18,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 23:48:18,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711197437] [2020-08-21 23:48:18,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 23:48:18,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:18,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 23:48:18,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 23:48:18,538 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 23:48:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:22,178 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 23:48:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 23:48:22,178 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 23:48:22,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:22,182 INFO L225 Difference]: With dead ends: 358 [2020-08-21 23:48:22,182 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 23:48:22,184 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 23:48:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 23:48:22,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 23:48:22,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 23:48:22,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 23:48:22,208 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 23:48:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:22,208 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 23:48:22,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 23:48:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 23:48:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 23:48:22,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:22,211 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 23:48:22,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:48:22,212 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:22,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:22,212 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 23:48:22,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:22,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013159524] [2020-08-21 23:48:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:22,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:23,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:48:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:23,301 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 23:48:23,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013159524] [2020-08-21 23:48:23,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:23,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 23:48:23,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369175252] [2020-08-21 23:48:23,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 23:48:23,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:23,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 23:48:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:48:23,304 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 23:48:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:25,560 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 23:48:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 23:48:25,562 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 23:48:25,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:25,565 INFO L225 Difference]: With dead ends: 375 [2020-08-21 23:48:25,566 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 23:48:25,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-21 23:48:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 23:48:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 23:48:25,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 23:48:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 23:48:25,627 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 23:48:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:25,628 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 23:48:25,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 23:48:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 23:48:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 23:48:25,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:25,630 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 23:48:25,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:48:25,631 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 23:48:25,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:25,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362656391] [2020-08-21 23:48:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:48:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:26,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:27,124 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 23:48:27,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362656391] [2020-08-21 23:48:27,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:48:27,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 23:48:27,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973922568] [2020-08-21 23:48:27,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 23:48:27,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:48:27,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 23:48:27,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 23:48:27,127 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 23:48:29,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:48:29,326 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 23:48:29,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 23:48:29,326 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 23:48:29,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:48:29,329 INFO L225 Difference]: With dead ends: 327 [2020-08-21 23:48:29,329 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 23:48:29,330 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 23:48:29,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 23:48:29,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 23:48:29,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 23:48:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 23:48:29,358 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 23:48:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:48:29,360 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 23:48:29,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 23:48:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 23:48:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 23:48:29,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:48:29,365 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 23:48:29,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:48:29,366 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:48:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:48:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 23:48:29,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:48:29,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178752087] [2020-08-21 23:48:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:48:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:29,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 23:48:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:29,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 23:48:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 23:48:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:48:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:30,889 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-21 23:48:31,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:48:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:31,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:48:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:32,338 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 23:48:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:48:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:48:44,915 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 257 DAG size of output: 48