/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:35:08,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:35:08,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:35:08,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:35:08,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:35:08,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:35:08,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:35:08,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:35:08,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:35:08,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:35:08,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:35:08,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:35:08,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:35:08,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:35:08,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:35:08,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:35:08,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:35:08,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:35:08,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:35:08,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:35:08,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:35:08,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:35:08,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:35:08,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:35:08,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:35:08,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:35:08,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:35:08,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:35:08,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:35:08,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:35:08,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:35:08,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:35:08,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:35:08,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:35:08,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:35:08,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:35:08,550 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:35:08,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:35:08,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:35:08,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:35:08,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:35:08,554 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 03:35:08,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:35:08,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:35:08,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:35:08,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:35:08,601 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:35:08,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:35:08,602 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:35:08,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:35:08,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:35:08,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:35:08,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:35:08,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:35:08,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:35:08,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:35:08,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:35:08,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:35:08,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:35:08,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:35:08,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:35:08,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:35:08,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:35:08,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:35:08,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:35:08,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:35:08,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:35:08,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:35:08,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:35:08,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:35:08,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:35:08,607 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:35:08,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:35:08,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:35:08,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:35:08,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:35:08,966 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:35:08,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 03:35:09,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f434ed72/8b18b01946f3490785478c8e734054b5/FLAG995f957cb [2020-08-19 03:35:09,552 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:35:09,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 03:35:09,566 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f434ed72/8b18b01946f3490785478c8e734054b5/FLAG995f957cb [2020-08-19 03:35:09,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f434ed72/8b18b01946f3490785478c8e734054b5 [2020-08-19 03:35:09,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:35:09,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:35:09,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:09,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:35:09,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:35:09,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:09" (1/1) ... [2020-08-19 03:35:09,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b83777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:09, skipping insertion in model container [2020-08-19 03:35:09,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:09" (1/1) ... [2020-08-19 03:35:09,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:35:09,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:35:10,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:10,385 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:35:10,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:10,539 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:35:10,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10 WrapperNode [2020-08-19 03:35:10,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:10,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:35:10,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:35:10,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:35:10,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (1/1) ... [2020-08-19 03:35:10,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:35:10,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:35:10,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:35:10,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:35:10,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (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 03:35:10,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:35:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:35:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 03:35:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 03:35:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 03:35:10,692 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 03:35:10,693 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 03:35:10,694 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 03:35:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 03:35:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 03:35:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 03:35:10,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:35:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:35:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 03:35:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 03:35:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 03:35:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 03:35:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 03:35:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 03:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 03:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 03:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 03:35:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 03:35:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 03:35:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 03:35:10,707 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 03:35:10,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 03:35:10,709 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 03:35:10,710 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 03:35:10,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 03:35:10,712 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:35:10,713 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 03:35:10,714 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:35:10,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:35:11,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:35:11,545 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 03:35:11,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:11 BoogieIcfgContainer [2020-08-19 03:35:11,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:35:11,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:35:11,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:35:11,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:35:11,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:35:09" (1/3) ... [2020-08-19 03:35:11,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253b4bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:11, skipping insertion in model container [2020-08-19 03:35:11,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:10" (2/3) ... [2020-08-19 03:35:11,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253b4bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:11, skipping insertion in model container [2020-08-19 03:35:11,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:11" (3/3) ... [2020-08-19 03:35:11,559 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 03:35:11,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:35:11,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:35:11,592 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:35:11,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:35:11,618 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:35:11,618 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:35:11,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:35:11,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:35:11,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:35:11,619 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:35:11,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:35:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 03:35:11,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 03:35:11,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:11,652 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 03:35:11,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:11,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:11,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 03:35:11,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:11,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143489219] [2020-08-19 03:35:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:11,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,149 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 03:35:12,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143489219] [2020-08-19 03:35:12,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:12,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:35:12,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744827634] [2020-08-19 03:35:12,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:35:12,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:12,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:35:12,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:35:12,176 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 03:35:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:12,623 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 03:35:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:35:12,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 03:35:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:12,639 INFO L225 Difference]: With dead ends: 343 [2020-08-19 03:35:12,640 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 03:35:12,647 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 03:35:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 03:35:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 03:35:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 03:35:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 03:35:12,717 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 03:35:12,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:12,739 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 03:35:12,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:35:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 03:35:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 03:35:12,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:12,742 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 03:35:12,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:35:12,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:12,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:12,746 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 03:35:12,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:12,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800357845] [2020-08-19 03:35:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:13,132 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 03:35:13,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800357845] [2020-08-19 03:35:13,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:13,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:35:13,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301250341] [2020-08-19 03:35:13,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:35:13,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:35:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:35:13,136 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 03:35:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:14,289 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 03:35:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:35:14,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 03:35:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:14,292 INFO L225 Difference]: With dead ends: 327 [2020-08-19 03:35:14,293 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 03:35:14,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:35:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 03:35:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 03:35:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 03:35:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 03:35:14,340 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 03:35:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:14,341 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 03:35:14,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:35:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 03:35:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:35:14,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:14,343 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 03:35:14,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:35:14,344 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:14,344 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 03:35:14,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:14,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69263097] [2020-08-19 03:35:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:14,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:14,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:15,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:35:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 16 proven. 93 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-08-19 03:35:16,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69263097] [2020-08-19 03:35:16,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:16,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 03:35:16,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175421732] [2020-08-19 03:35:16,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 03:35:16,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 03:35:16,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 03:35:16,140 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 03:35:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:19,181 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 03:35:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:35:19,182 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 03:35:19,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:19,187 INFO L225 Difference]: With dead ends: 348 [2020-08-19 03:35:19,187 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 03:35:19,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 03:35:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 03:35:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 03:35:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 03:35:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 03:35:19,214 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 03:35:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:19,215 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 03:35:19,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 03:35:19,215 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 03:35:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:35:19,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:19,217 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 03:35:19,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:35:19,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:19,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:19,218 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 03:35:19,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:19,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1315247524] [2020-08-19 03:35:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:19,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:19,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:19,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:19,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:35:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:20,608 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 03:35:20,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1315247524] [2020-08-19 03:35:20,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:20,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 03:35:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049767558] [2020-08-19 03:35:20,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 03:35:20,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:20,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 03:35:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 03:35:20,614 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 03:35:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:23,104 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 03:35:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:35:23,105 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 03:35:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:23,109 INFO L225 Difference]: With dead ends: 360 [2020-08-19 03:35:23,109 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 03:35:23,117 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 [2020-08-19 03:35:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 03:35:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 03:35:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 03:35:23,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 03:35:23,174 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 03:35:23,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:23,175 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 03:35:23,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 03:35:23,175 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 03:35:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:35:23,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:23,186 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 03:35:23,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:35:23,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:23,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:23,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 03:35:23,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:23,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532373590] [2020-08-19 03:35:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:35:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-08-19 03:35:24,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532373590] [2020-08-19 03:35:24,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:24,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 03:35:24,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790899791] [2020-08-19 03:35:24,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 03:35:24,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:24,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 03:35:24,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 03:35:24,775 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 03:35:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:27,536 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 03:35:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 03:35:27,538 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 03:35:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:27,543 INFO L225 Difference]: With dead ends: 371 [2020-08-19 03:35:27,543 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 03:35:27,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 03:35:27,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 03:35:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 03:35:27,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 03:35:27,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 03:35:27,567 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 03:35:27,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:27,568 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 03:35:27,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 03:35:27,568 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 03:35:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 03:35:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:27,571 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 03:35:27,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:35:27,571 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:27,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 03:35:27,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:27,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914551033] [2020-08-19 03:35:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:35:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:28,975 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 03:35:28,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914551033] [2020-08-19 03:35:28,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:28,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 03:35:28,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570380855] [2020-08-19 03:35:28,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 03:35:28,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 03:35:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:35:28,978 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 03:35:31,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:31,185 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 03:35:31,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 03:35:31,186 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 03:35:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:31,197 INFO L225 Difference]: With dead ends: 323 [2020-08-19 03:35:31,197 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 03:35:31,198 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 [2020-08-19 03:35:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 03:35:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 03:35:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 03:35:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 03:35:31,217 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 03:35:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:31,217 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 03:35:31,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 03:35:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 03:35:31,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 03:35:31,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:31,220 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 03:35:31,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:35:31,221 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:31,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:31,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 03:35:31,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:31,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121308514] [2020-08-19 03:35:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 03:35:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:31,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:32,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:32,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:32,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:32,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:33,511 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 03:35:34,343 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 03:35:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:34,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:34,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 03:35:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 03:35:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:36,228 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-08-19 03:35:36,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:35:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:37,453 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 03:35:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat