/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=SMALLEST --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 15:44:18,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:44:18,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:44:18,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:44:18,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:44:18,061 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:44:18,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:44:18,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:44:18,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:44:18,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:44:18,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:44:18,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:44:18,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:44:18,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:44:18,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:44:18,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:44:18,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:44:18,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:44:18,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:44:18,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:44:18,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:44:18,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:44:18,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:44:18,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:44:18,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:44:18,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:44:18,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:44:18,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:44:18,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:44:18,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:44:18,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:44:18,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:44:18,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:44:18,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:44:18,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:44:18,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:44:18,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:44:18,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:44:18,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:44:18,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:44:18,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:44:18,099 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 15:44:18,123 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:44:18,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:44:18,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:44:18,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:44:18,125 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:44:18,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:44:18,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:44:18,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:44:18,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:44:18,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:44:18,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:44:18,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:44:18,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:44:18,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:44:18,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:44:18,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:44:18,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:44:18,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:44:18,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:44:18,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:44:18,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:44:18,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:44:18,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:44:18,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:44:18,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:44:18,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:44:18,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:44:18,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:44:18,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:44:18,130 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:44:18,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:44:18,474 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:44:18,478 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:44:18,480 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:44:18,480 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:44:18,481 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 15:44:18,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1232a2cd0/6226fbd0ce7a473388153716cddba7a7/FLAG18e230da9 [2020-08-21 15:44:19,150 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:44:19,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-21 15:44:19,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1232a2cd0/6226fbd0ce7a473388153716cddba7a7/FLAG18e230da9 [2020-08-21 15:44:19,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1232a2cd0/6226fbd0ce7a473388153716cddba7a7 [2020-08-21 15:44:19,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:44:19,416 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:44:19,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:19,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:44:19,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:44:19,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:19" (1/1) ... [2020-08-21 15:44:19,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe88c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:19, skipping insertion in model container [2020-08-21 15:44:19,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:19" (1/1) ... [2020-08-21 15:44:19,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:44:19,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:44:20,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:20,040 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:44:20,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:20,167 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:44:20,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20 WrapperNode [2020-08-21 15:44:20,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:20,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:44:20,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:44:20,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:44:20,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (1/1) ... [2020-08-21 15:44:20,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:44:20,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:44:20,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:44:20,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:44:20,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (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 15:44:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:44:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:44:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:44:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-21 15:44:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-21 15:44:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-21 15:44:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-21 15:44:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-21 15:44:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-21 15:44:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-21 15:44:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-21 15:44:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-21 15:44:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-21 15:44:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-21 15:44:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-21 15:44:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-21 15:44:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:44:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:44:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-21 15:44:20,335 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-21 15:44:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-21 15:44:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-21 15:44:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-21 15:44:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-21 15:44:20,336 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-21 15:44:20,337 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-21 15:44:20,338 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-21 15:44:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-21 15:44:20,340 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-21 15:44:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-21 15:44:20,342 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-21 15:44:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-21 15:44:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 15:44:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-21 15:44:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-21 15:44:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-21 15:44:20,348 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-21 15:44:20,349 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-21 15:44:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-21 15:44:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:44:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:44:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-21 15:44:20,354 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-21 15:44:20,355 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-21 15:44:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:44:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:44:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:44:21,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:44:21,278 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-21 15:44:21,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:21 BoogieIcfgContainer [2020-08-21 15:44:21,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:44:21,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:44:21,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:44:21,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:44:21,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:44:19" (1/3) ... [2020-08-21 15:44:21,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448854b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:21, skipping insertion in model container [2020-08-21 15:44:21,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:20" (2/3) ... [2020-08-21 15:44:21,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448854b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:21, skipping insertion in model container [2020-08-21 15:44:21,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:21" (3/3) ... [2020-08-21 15:44:21,297 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-21 15:44:21,308 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:44:21,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:44:21,331 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:44:21,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:44:21,358 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:44:21,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:44:21,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:44:21,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:44:21,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:44:21,358 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:44:21,358 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:44:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-21 15:44:21,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 15:44:21,393 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:21,395 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 15:44:21,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:21,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:21,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-21 15:44:21,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:21,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400486874] [2020-08-21 15:44:21,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:21,972 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 15:44:21,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400486874] [2020-08-21 15:44:21,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:21,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:44:21,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918661176] [2020-08-21 15:44:21,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:44:21,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:21,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:44:21,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:44:21,998 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-21 15:44:22,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:22,493 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-21 15:44:22,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:44:22,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 15:44:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:22,510 INFO L225 Difference]: With dead ends: 343 [2020-08-21 15:44:22,510 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 15:44:22,517 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 15:44:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 15:44:22,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-21 15:44:22,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-21 15:44:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-21 15:44:22,608 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-21 15:44:22,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:22,609 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-21 15:44:22,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:44:22,609 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-21 15:44:22,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 15:44:22,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:22,613 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 15:44:22,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:44:22,614 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-21 15:44:22,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:22,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246026078] [2020-08-21 15:44:22,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:23,181 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 15:44:23,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246026078] [2020-08-21 15:44:23,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-21 15:44:23,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780412629] [2020-08-21 15:44:23,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-21 15:44:23,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:23,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-21 15:44:23,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-21 15:44:23,195 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-21 15:44:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:24,447 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-21 15:44:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 15:44:24,447 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-21 15:44:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:24,452 INFO L225 Difference]: With dead ends: 327 [2020-08-21 15:44:24,454 INFO L226 Difference]: Without dead ends: 179 [2020-08-21 15:44:24,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-21 15:44:24,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-21 15:44:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-21 15:44:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-21 15:44:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-21 15:44:24,504 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-21 15:44:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:24,504 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-21 15:44:24,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-21 15:44:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-21 15:44:24,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:24,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:24,512 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 15:44:24,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:44:24,513 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:24,514 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-21 15:44:24,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:24,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929835248] [2020-08-21 15:44:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:24,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:26,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:26,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:26,367 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 15:44:26,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929835248] [2020-08-21 15:44:26,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:26,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-21 15:44:26,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477954365] [2020-08-21 15:44:26,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-21 15:44:26,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:26,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-21 15:44:26,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-21 15:44:26,372 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-21 15:44:29,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:29,940 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-21 15:44:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-21 15:44:29,940 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-21 15:44:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:29,943 INFO L225 Difference]: With dead ends: 358 [2020-08-21 15:44:29,947 INFO L226 Difference]: Without dead ends: 196 [2020-08-21 15:44:29,950 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 15:44:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-21 15:44:29,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-21 15:44:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-21 15:44:29,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-21 15:44:29,990 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-21 15:44:29,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:29,991 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-21 15:44:29,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-21 15:44:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-21 15:44:29,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:29,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:29,993 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 15:44:29,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:44:29,994 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:29,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:29,994 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-21 15:44:29,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:29,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874308988] [2020-08-21 15:44:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:30,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:31,339 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 15:44:31,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874308988] [2020-08-21 15:44:31,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:31,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 15:44:31,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545970227] [2020-08-21 15:44:31,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 15:44:31,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:31,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 15:44:31,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-21 15:44:31,345 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-21 15:44:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:33,587 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-21 15:44:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 15:44:33,587 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-21 15:44:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:33,591 INFO L225 Difference]: With dead ends: 375 [2020-08-21 15:44:33,592 INFO L226 Difference]: Without dead ends: 202 [2020-08-21 15:44:33,593 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 15:44:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-21 15:44:33,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-21 15:44:33,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-21 15:44:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-21 15:44:33,636 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-21 15:44:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:33,640 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-21 15:44:33,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-21 15:44:33,640 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-21 15:44:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 15:44:33,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:33,643 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 15:44:33,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:44:33,650 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:33,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:33,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-21 15:44:33,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:33,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63662619] [2020-08-21 15:44:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:33,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:34,997 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 15:44:34,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63662619] [2020-08-21 15:44:34,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:44:34,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 15:44:34,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119177459] [2020-08-21 15:44:34,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 15:44:34,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:34,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 15:44:35,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-21 15:44:35,000 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-21 15:44:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:37,199 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-21 15:44:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 15:44:37,200 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-21 15:44:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:37,205 INFO L225 Difference]: With dead ends: 327 [2020-08-21 15:44:37,205 INFO L226 Difference]: Without dead ends: 258 [2020-08-21 15:44:37,206 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 15:44:37,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-21 15:44:37,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-21 15:44:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-21 15:44:37,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-21 15:44:37,240 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-21 15:44:37,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:37,243 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-21 15:44:37,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 15:44:37,243 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-21 15:44:37,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-21 15:44:37,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:37,247 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 15:44:37,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:44:37,248 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:37,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-21 15:44:37,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:37,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629809642] [2020-08-21 15:44:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 15:44:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:38,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-21 15:44:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-21 15:44:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:44:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:38,912 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-21 15:44:39,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:44:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:39,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:44:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:40,309 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-21 15:44:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:53,859 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 257 DAG size of output: 48