/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:25,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:25,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:25,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:25,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:25,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:25,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:25,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:25,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:25,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:25,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:25,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:25,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:25,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:25,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:25,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:25,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:25,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:25,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:25,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:25,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:25,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:25,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:25,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:25,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:09:25,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:09:25,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:09:25,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:09:25,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:09:25,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:09:25,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:09:25,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:09:25,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:09:25,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:09:25,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:09:25,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:09:25,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:09:25,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:09:25,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:25,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:25,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:25,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:09:25,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:25,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:25,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:25,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:25,440 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:25,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:25,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:25,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:25,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:25,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:25,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:25,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:25,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:25,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:25,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:25,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:25,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:25,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:25,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:25,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:25,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:25,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:25,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:25,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:25,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:25,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:25,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:25,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:25,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:25,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:25,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:25,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:25,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:25,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:25,820 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:25,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-19 01:09:25,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42f4ed72/442206b781a94ee6b50b4a0869d499ac/FLAG6bd4f8186 [2020-08-19 01:09:26,430 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:26,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-08-19 01:09:26,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42f4ed72/442206b781a94ee6b50b4a0869d499ac/FLAG6bd4f8186 [2020-08-19 01:09:26,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42f4ed72/442206b781a94ee6b50b4a0869d499ac [2020-08-19 01:09:26,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:26,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:26,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:26,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:26,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:26,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:26" (1/1) ... [2020-08-19 01:09:26,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65eeb70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:26, skipping insertion in model container [2020-08-19 01:09:26,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:26" (1/1) ... [2020-08-19 01:09:26,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:26,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:27,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:27,320 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:27,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:27,450 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:27,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27 WrapperNode [2020-08-19 01:09:27,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:27,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:27,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:27,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:27,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... [2020-08-19 01:09:27,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:27,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:27,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:27,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:27,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:27,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 01:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 01:09:27,625 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 01:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 01:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 01:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 01:09:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 01:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 01:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 01:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 01:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 01:09:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 01:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 01:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 01:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 01:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 01:09:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 01:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 01:09:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 01:09:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 01:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 01:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 01:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 01:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 01:09:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 01:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 01:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 01:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 01:09:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 01:09:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 01:09:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 01:09:27,634 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 01:09:27,635 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 01:09:27,636 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 01:09:27,637 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:09:27,638 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 01:09:27,639 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 01:09:27,640 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 01:09:27,641 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 01:09:27,642 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 01:09:27,643 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 01:09:27,644 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 01:09:27,645 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 01:09:27,647 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 01:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 01:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 01:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 01:09:27,648 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 01:09:27,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 01:09:27,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 01:09:27,651 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 01:09:27,652 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 01:09:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 01:09:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:27,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:28,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:28,665 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 01:09:28,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:28 BoogieIcfgContainer [2020-08-19 01:09:28,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:28,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:28,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:28,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:28,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:26" (1/3) ... [2020-08-19 01:09:28,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:28, skipping insertion in model container [2020-08-19 01:09:28,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:27" (2/3) ... [2020-08-19 01:09:28,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5f884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:28, skipping insertion in model container [2020-08-19 01:09:28,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:28" (3/3) ... [2020-08-19 01:09:28,678 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-08-19 01:09:28,689 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:28,697 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:28,711 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:28,734 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:28,734 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:28,734 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:28,734 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:28,735 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:28,735 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:28,735 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:28,735 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:28,760 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 01:09:28,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 01:09:28,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:28,771 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:28,771 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:28,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 01:09:28,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:28,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705017791] [2020-08-19 01:09:28,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 01:09:29,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705017791] [2020-08-19 01:09:29,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:29,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:09:29,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147930059] [2020-08-19 01:09:29,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:09:29,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:09:29,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:09:29,351 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 01:09:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:29,934 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 01:09:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:09:29,936 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 01:09:29,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:29,954 INFO L225 Difference]: With dead ends: 343 [2020-08-19 01:09:29,955 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:09:29,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:09:29,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:09:30,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 01:09:30,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 01:09:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 01:09:30,041 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 01:09:30,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:30,041 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 01:09:30,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:09:30,041 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 01:09:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 01:09:30,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:30,045 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:30,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:30,045 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:30,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:30,046 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 01:09:30,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:30,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789477707] [2020-08-19 01:09:30,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 01:09:30,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789477707] [2020-08-19 01:09:30,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:30,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:09:30,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018088901] [2020-08-19 01:09:30,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:09:30,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:30,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:09:30,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:09:30,787 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 01:09:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:32,077 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 01:09:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:09:32,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 01:09:32,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:32,082 INFO L225 Difference]: With dead ends: 327 [2020-08-19 01:09:32,082 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 01:09:32,089 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 [2020-08-19 01:09:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 01:09:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 01:09:32,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 01:09:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 01:09:32,134 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 01:09:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:32,134 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 01:09:32,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:09:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 01:09:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:32,146 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:32,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:32,147 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:32,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:32,148 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 01:09:32,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:32,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039302825] [2020-08-19 01:09:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:32,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:33,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 95 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-08-19 01:09:34,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039302825] [2020-08-19 01:09:34,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:34,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-08-19 01:09:34,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357940521] [2020-08-19 01:09:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-08-19 01:09:34,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:34,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-08-19 01:09:34,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=746, Unknown=0, NotChecked=0, Total=812 [2020-08-19 01:09:34,351 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 29 states. [2020-08-19 01:09:38,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:38,049 INFO L93 Difference]: Finished difference Result 358 states and 439 transitions. [2020-08-19 01:09:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 01:09:38,050 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 154 [2020-08-19 01:09:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:38,053 INFO L225 Difference]: With dead ends: 358 [2020-08-19 01:09:38,054 INFO L226 Difference]: Without dead ends: 196 [2020-08-19 01:09:38,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=237, Invalid=2415, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 01:09:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-08-19 01:09:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 185. [2020-08-19 01:09:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 01:09:38,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 01:09:38,082 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 01:09:38,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:38,082 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 01:09:38,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-08-19 01:09:38,083 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 01:09:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:38,085 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:38,085 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:38,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:38,086 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 01:09:38,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:38,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607053850] [2020-08-19 01:09:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:38,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:39,403 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2020-08-19 01:09:39,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607053850] [2020-08-19 01:09:39,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:39,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:09:39,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946993375] [2020-08-19 01:09:39,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:09:39,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:39,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:09:39,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:09:39,408 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 19 states. [2020-08-19 01:09:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:41,646 INFO L93 Difference]: Finished difference Result 375 states and 445 transitions. [2020-08-19 01:09:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:09:41,647 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 01:09:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:41,650 INFO L225 Difference]: With dead ends: 375 [2020-08-19 01:09:41,650 INFO L226 Difference]: Without dead ends: 202 [2020-08-19 01:09:41,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:09:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-19 01:09:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 189. [2020-08-19 01:09:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-08-19 01:09:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2020-08-19 01:09:41,673 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 154 [2020-08-19 01:09:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:41,673 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2020-08-19 01:09:41,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:09:41,674 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2020-08-19 01:09:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 01:09:41,676 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:41,676 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:41,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:41,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:41,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 01:09:41,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:41,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655414458] [2020-08-19 01:09:41,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:41,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-19 01:09:43,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655414458] [2020-08-19 01:09:43,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:09:43,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 01:09:43,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137560582] [2020-08-19 01:09:43,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 01:09:43,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 01:09:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:09:43,297 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand 22 states. [2020-08-19 01:09:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:45,649 INFO L93 Difference]: Finished difference Result 327 states and 393 transitions. [2020-08-19 01:09:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 01:09:45,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 01:09:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:45,654 INFO L225 Difference]: With dead ends: 327 [2020-08-19 01:09:45,654 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 01:09:45,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:09:45,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 01:09:45,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 213. [2020-08-19 01:09:45,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-19 01:09:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2020-08-19 01:09:45,687 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 154 [2020-08-19 01:09:45,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:45,690 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2020-08-19 01:09:45,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 01:09:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2020-08-19 01:09:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 01:09:45,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:45,694 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:45,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:45,695 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 01:09:45,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:45,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719385696] [2020-08-19 01:09:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:45,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:45,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:09:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:09:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 01:09:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:09:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:47,336 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-08-19 01:09:47,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:09:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:47,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:09:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:48,700 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-08-19 01:09:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:01,993 WARN L193 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 257 DAG size of output: 48