/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=BIGGEST --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 17:20:55,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 17:20:55,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 17:20:55,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 17:20:55,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 17:20:55,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 17:20:55,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 17:20:55,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 17:20:55,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 17:20:55,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 17:20:55,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 17:20:55,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 17:20:55,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 17:20:55,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 17:20:55,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 17:20:55,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 17:20:55,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 17:20:55,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 17:20:55,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 17:20:55,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 17:20:55,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 17:20:55,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 17:20:55,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 17:20:55,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 17:20:56,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 17:20:56,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 17:20:56,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 17:20:56,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 17:20:56,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 17:20:56,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 17:20:56,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 17:20:56,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 17:20:56,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 17:20:56,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 17:20:56,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 17:20:56,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 17:20:56,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 17:20:56,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 17:20:56,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 17:20:56,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 17:20:56,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 17:20:56,015 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 17:20:56,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 17:20:56,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 17:20:56,054 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 17:20:56,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 17:20:56,055 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 17:20:56,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 17:20:56,055 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 17:20:56,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 17:20:56,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 17:20:56,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 17:20:56,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 17:20:56,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 17:20:56,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 17:20:56,057 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 17:20:56,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 17:20:56,058 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 17:20:56,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 17:20:56,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 17:20:56,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 17:20:56,059 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 17:20:56,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 17:20:56,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 17:20:56,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 17:20:56,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 17:20:56,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 17:20:56,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 17:20:56,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 17:20:56,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 17:20:56,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 17:20:56,060 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=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-08-21 17:20:56,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 17:20:56,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 17:20:56,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 17:20:56,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 17:20:56,390 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 17:20:56,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 17:20:56,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1518c4617/b4b8e22dcfff409ebb7ad0f01a56aeba/FLAG08fd5deed [2020-08-21 17:20:56,972 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 17:20:56,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 17:20:56,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1518c4617/b4b8e22dcfff409ebb7ad0f01a56aeba/FLAG08fd5deed [2020-08-21 17:20:57,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1518c4617/b4b8e22dcfff409ebb7ad0f01a56aeba [2020-08-21 17:20:57,303 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 17:20:57,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 17:20:57,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 17:20:57,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 17:20:57,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 17:20:57,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:57,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c975714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57, skipping insertion in model container [2020-08-21 17:20:57,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:57,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 17:20:57,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 17:20:57,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:20:57,836 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 17:20:57,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 17:20:57,987 INFO L208 MainTranslator]: Completed translation [2020-08-21 17:20:57,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57 WrapperNode [2020-08-21 17:20:57,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 17:20:57,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 17:20:57,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 17:20:57,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 17:20:58,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (1/1) ... [2020-08-21 17:20:58,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 17:20:58,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 17:20:58,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 17:20:58,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 17:20:58,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (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 17:20:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 17:20:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 17:20:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 17:20:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 17:20:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 17:20:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 17:20:58,204 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 17:20:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 17:20:58,205 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 17:20:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 17:20:58,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 17:20:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 17:20:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 17:20:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 17:20:58,207 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 17:20:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 17:20:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 17:20:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 17:20:58,208 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 17:20:58,209 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 17:20:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 17:20:58,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 17:20:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 17:20:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 17:20:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 17:20:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 17:20:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 17:20:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 17:20:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 17:20:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 17:20:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 17:20:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 17:20:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 17:20:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 17:20:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 17:20:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 17:20:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 17:20:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 17:20:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 17:20:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 17:20:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 17:20:58,224 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 17:20:58,225 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 17:20:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 17:20:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 17:20:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 17:20:58,229 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 17:20:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 17:20:58,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 17:20:59,046 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 17:20:59,047 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 17:20:59,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:20:59 BoogieIcfgContainer [2020-08-21 17:20:59,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 17:20:59,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 17:20:59,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 17:20:59,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 17:20:59,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 05:20:57" (1/3) ... [2020-08-21 17:20:59,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b93ff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:20:59, skipping insertion in model container [2020-08-21 17:20:59,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 05:20:57" (2/3) ... [2020-08-21 17:20:59,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b93ff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 05:20:59, skipping insertion in model container [2020-08-21 17:20:59,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 05:20:59" (3/3) ... [2020-08-21 17:20:59,061 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 17:20:59,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 17:20:59,081 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 17:20:59,096 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 17:20:59,123 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 17:20:59,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 17:20:59,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 17:20:59,124 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 17:20:59,124 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 17:20:59,124 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 17:20:59,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 17:20:59,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 17:20:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 17:20:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 17:20:59,166 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:20:59,167 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 17:20:59,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:20:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:20:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 17:20:59,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:20:59,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071572424] [2020-08-21 17:20:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:20:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:20:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:20:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:20:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:20:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:20:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:20:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:20:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:20:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:20:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:20:59,668 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 17:20:59,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071572424] [2020-08-21 17:20:59,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 17:20:59,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 17:20:59,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377071070] [2020-08-21 17:20:59,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 17:20:59,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:20:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 17:20:59,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 17:20:59,699 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 17:21:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:21:00,189 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 17:21:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 17:21:00,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 17:21:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:21:00,205 INFO L225 Difference]: With dead ends: 343 [2020-08-21 17:21:00,205 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 17:21:00,212 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 17:21:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 17:21:00,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 17:21:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 17:21:00,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 17:21:00,283 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 17:21:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:21:00,284 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 17:21:00,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 17:21:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 17:21:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 17:21:00,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:21:00,289 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 17:21:00,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 17:21:00,289 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:21:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:21:00,290 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 17:21:00,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:21:00,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820236106] [2020-08-21 17:21:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:21:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:21:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:00,762 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 17:21:00,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820236106] [2020-08-21 17:21:00,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:21:00,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 17:21:00,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708180103] [2020-08-21 17:21:00,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 17:21:00,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:21:00,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 17:21:00,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 17:21:00,766 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 17:21:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:21:01,970 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 17:21:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 17:21:01,970 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 17:21:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:21:01,975 INFO L225 Difference]: With dead ends: 327 [2020-08-21 17:21:01,976 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 17:21:01,978 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 17:21:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 17:21:02,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 17:21:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 17:21:02,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 17:21:02,002 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 17:21:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:21:02,003 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 17:21:02,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 17:21:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 17:21:02,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:21:02,007 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:21:02,007 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 17:21:02,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 17:21:02,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:21:02,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:21:02,008 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 17:21:02,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:21:02,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795747884] [2020-08-21 17:21:02,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:21:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:21:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:21:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:03,681 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 17:21:03,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795747884] [2020-08-21 17:21:03,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:21:03,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 17:21:03,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15276540] [2020-08-21 17:21:03,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 17:21:03,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:21:03,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 17:21:03,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 17:21:03,685 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 17:21:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:21:07,313 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 17:21:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 17:21:07,314 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 17:21:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:21:07,319 INFO L225 Difference]: With dead ends: 358 [2020-08-21 17:21:07,319 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 17:21:07,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-21 17:21:07,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 17:21:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 17:21:07,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 17:21:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 17:21:07,345 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 17:21:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:21:07,346 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 17:21:07,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 17:21:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 17:21:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:21:07,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:21:07,349 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 17:21:07,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 17:21:07,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:21:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:21:07,350 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 17:21:07,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:21:07,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76976226] [2020-08-21 17:21:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:21:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:21:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:21:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:08,485 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 17:21:08,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76976226] [2020-08-21 17:21:08,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:21:08,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 17:21:08,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873598679] [2020-08-21 17:21:08,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 17:21:08,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:21:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 17:21:08,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 17:21:08,488 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 17:21:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:21:10,704 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 17:21:10,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 17:21:10,705 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 17:21:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:21:10,708 INFO L225 Difference]: With dead ends: 375 [2020-08-21 17:21:10,708 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 17:21:10,709 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 17:21:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 17:21:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 17:21:10,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 17:21:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 17:21:10,732 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 17:21:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:21:10,733 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 17:21:10,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 17:21:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 17:21:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 17:21:10,735 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:21:10,735 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 17:21:10,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 17:21:10,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:21:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:21:10,736 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 17:21:10,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:21:10,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153719928] [2020-08-21 17:21:10,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:21:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:10,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:10,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:21:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:21:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:12,095 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 17:21:12,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153719928] [2020-08-21 17:21:12,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 17:21:12,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 17:21:12,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537030813] [2020-08-21 17:21:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 17:21:12,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 17:21:12,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 17:21:12,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 17:21:12,099 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 17:21:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 17:21:14,168 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 17:21:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 17:21:14,168 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 17:21:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 17:21:14,173 INFO L225 Difference]: With dead ends: 327 [2020-08-21 17:21:14,173 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 17:21:14,175 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 17:21:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 17:21:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 17:21:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 17:21:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 17:21:14,224 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 17:21:14,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 17:21:14,225 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 17:21:14,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 17:21:14,225 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 17:21:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 17:21:14,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 17:21:14,235 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 17:21:14,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 17:21:14,235 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 17:21:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 17:21:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 17:21:14,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 17:21:14,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530789894] [2020-08-21 17:21:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 17:21:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:14,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:14,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 17:21:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 17:21:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 17:21:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:15,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 17:21:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:16,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 17:21:16,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:16,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 17:21:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:17,704 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 17:21:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 17:21:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 17:21:30,896 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 257 DAG size of output: 48