/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=0.2 -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 04:23:40,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:40,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:40,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:40,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:40,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:40,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:40,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:40,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:40,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:40,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:40,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:40,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:40,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:40,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:40,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:40,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:40,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:40,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:40,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:40,651 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:40,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:40,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:40,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:40,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:23:40,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:23:40,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:23:40,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:23:40,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:23:40,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:23:40,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:23:40,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:23:40,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:23:40,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:23:40,664 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:23:40,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:23:40,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:23:40,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:23:40,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:40,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:40,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:40,667 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 04:23:40,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:40,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:40,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:40,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:40,693 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:40,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:40,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:40,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:40,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:40,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:40,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:40,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:40,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:40,695 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:40,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:40,695 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:40,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:40,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:40,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:40,696 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:40,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:40,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:40,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:40,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:40,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:40,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:40,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:40,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:40,698 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:40,698 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:41,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:41,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:41,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:41,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:41,026 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:41,027 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 04:23:41,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2612ae4c/407995f4bd1442418fb158b4725ffb88/FLAG33f01d5a8 [2020-08-19 04:23:41,638 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:41,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-08-19 04:23:41,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2612ae4c/407995f4bd1442418fb158b4725ffb88/FLAG33f01d5a8 [2020-08-19 04:23:41,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2612ae4c/407995f4bd1442418fb158b4725ffb88 [2020-08-19 04:23:41,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:41,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:41,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:41,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:41,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:41,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:41" (1/1) ... [2020-08-19 04:23:41,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d0cd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:41, skipping insertion in model container [2020-08-19 04:23:41,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:41" (1/1) ... [2020-08-19 04:23:41,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:42,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:42,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:42,545 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:42,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:42,676 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:42,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42 WrapperNode [2020-08-19 04:23:42,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:42,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:42,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:42,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:42,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (1/1) ... [2020-08-19 04:23:42,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:42,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:42,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:42,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:42,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (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 04:23:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 04:23:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 04:23:42,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-08-19 04:23:42,850 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-08-19 04:23:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-08-19 04:23:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-08-19 04:23:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-08-19 04:23:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-08-19 04:23:42,851 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-08-19 04:23:42,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 04:23:42,853 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 04:23:42,854 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 04:23:42,855 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 04:23:42,856 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 04:23:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 04:23:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 04:23:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 04:23:42,860 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 04:23:42,861 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 04:23:42,862 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 04:23:42,863 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 04:23:42,864 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 04:23:42,865 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 04:23:42,866 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 04:23:42,867 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 04:23:42,868 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-08-19 04:23:42,869 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-08-19 04:23:42,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-08-19 04:23:42,871 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-08-19 04:23:42,872 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-08-19 04:23:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-08-19 04:23:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:42,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:43,712 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:43,713 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-08-19 04:23:43,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:43 BoogieIcfgContainer [2020-08-19 04:23:43,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:43,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:43,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:43,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:43,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:41" (1/3) ... [2020-08-19 04:23:43,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b915684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:43, skipping insertion in model container [2020-08-19 04:23:43,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:42" (2/3) ... [2020-08-19 04:23:43,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b915684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:43, skipping insertion in model container [2020-08-19 04:23:43,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:43" (3/3) ... [2020-08-19 04:23:43,727 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-08-19 04:23:43,739 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:43,748 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:43,764 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:43,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:43,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:43,792 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:43,792 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:43,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:43,793 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:43,793 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:43,793 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:43,818 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 04:23:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 04:23:43,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:43,829 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 04:23:43,829 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:43,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:43,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1405399524, now seen corresponding path program 1 times [2020-08-19 04:23:43,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:43,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871109044] [2020-08-19 04:23:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:44,346 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 04:23:44,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871109044] [2020-08-19 04:23:44,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:44,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:23:44,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276942241] [2020-08-19 04:23:44,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:23:44,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:44,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:23:44,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:23:44,376 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 04:23:44,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:44,820 INFO L93 Difference]: Finished difference Result 343 states and 542 transitions. [2020-08-19 04:23:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:23:44,822 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 04:23:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:44,837 INFO L225 Difference]: With dead ends: 343 [2020-08-19 04:23:44,837 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 04:23:44,844 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 04:23:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 04:23:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 155. [2020-08-19 04:23:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 04:23:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 184 transitions. [2020-08-19 04:23:44,915 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 184 transitions. Word has length 59 [2020-08-19 04:23:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:44,916 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 184 transitions. [2020-08-19 04:23:44,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:23:44,916 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 184 transitions. [2020-08-19 04:23:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 04:23:44,920 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:44,920 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 04:23:44,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:44,921 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash 747676979, now seen corresponding path program 1 times [2020-08-19 04:23:44,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:44,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863458717] [2020-08-19 04:23:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:45,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:45,391 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 04:23:45,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863458717] [2020-08-19 04:23:45,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:23:45,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 04:23:45,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922238782] [2020-08-19 04:23:45,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 04:23:45,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:45,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 04:23:45,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-08-19 04:23:45,396 INFO L87 Difference]: Start difference. First operand 155 states and 184 transitions. Second operand 13 states. [2020-08-19 04:23:46,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:46,542 INFO L93 Difference]: Finished difference Result 327 states and 406 transitions. [2020-08-19 04:23:46,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:23:46,543 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-08-19 04:23:46,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:46,548 INFO L225 Difference]: With dead ends: 327 [2020-08-19 04:23:46,548 INFO L226 Difference]: Without dead ends: 179 [2020-08-19 04:23:46,553 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 04:23:46,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-19 04:23:46,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 168. [2020-08-19 04:23:46,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-08-19 04:23:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 199 transitions. [2020-08-19 04:23:46,586 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 199 transitions. Word has length 60 [2020-08-19 04:23:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:46,587 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 199 transitions. [2020-08-19 04:23:46,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 04:23:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 199 transitions. [2020-08-19 04:23:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 04:23:46,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:46,592 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 04:23:46,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:46,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash 586330229, now seen corresponding path program 1 times [2020-08-19 04:23:46,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:46,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [637912909] [2020-08-19 04:23:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:46,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:46,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:47,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:23:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:48,312 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 04:23:48,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [637912909] [2020-08-19 04:23:48,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:23:48,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 04:23:48,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884347226] [2020-08-19 04:23:48,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 04:23:48,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:48,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 04:23:48,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:23:48,316 INFO L87 Difference]: Start difference. First operand 168 states and 199 transitions. Second operand 28 states. [2020-08-19 04:23:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:51,344 INFO L93 Difference]: Finished difference Result 348 states and 425 transitions. [2020-08-19 04:23:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 04:23:51,345 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 04:23:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:51,348 INFO L225 Difference]: With dead ends: 348 [2020-08-19 04:23:51,348 INFO L226 Difference]: Without dead ends: 189 [2020-08-19 04:23:51,350 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 04:23:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-08-19 04:23:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 176. [2020-08-19 04:23:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 04:23:51,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 208 transitions. [2020-08-19 04:23:51,371 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 208 transitions. Word has length 154 [2020-08-19 04:23:51,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:51,372 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 208 transitions. [2020-08-19 04:23:51,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 04:23:51,372 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 208 transitions. [2020-08-19 04:23:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 04:23:51,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:51,375 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 04:23:51,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:51,376 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:51,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:51,376 INFO L82 PathProgramCache]: Analyzing trace with hash -467161035, now seen corresponding path program 1 times [2020-08-19 04:23:51,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:51,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102286921] [2020-08-19 04:23:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:51,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:51,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:51,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:51,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:23:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:52,726 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 04:23:52,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [102286921] [2020-08-19 04:23:52,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:23:52,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 04:23:52,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295684979] [2020-08-19 04:23:52,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 04:23:52,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 04:23:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:23:52,733 INFO L87 Difference]: Start difference. First operand 176 states and 208 transitions. Second operand 19 states. [2020-08-19 04:23:54,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:54,880 INFO L93 Difference]: Finished difference Result 360 states and 431 transitions. [2020-08-19 04:23:54,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:23:54,880 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 154 [2020-08-19 04:23:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:54,885 INFO L225 Difference]: With dead ends: 360 [2020-08-19 04:23:54,885 INFO L226 Difference]: Without dead ends: 193 [2020-08-19 04:23:54,887 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 04:23:54,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-08-19 04:23:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-08-19 04:23:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-08-19 04:23:54,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 216 transitions. [2020-08-19 04:23:54,919 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 216 transitions. Word has length 154 [2020-08-19 04:23:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:54,922 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 216 transitions. [2020-08-19 04:23:54,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 04:23:54,922 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 216 transitions. [2020-08-19 04:23:54,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 04:23:54,925 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:54,925 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 04:23:54,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:54,929 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:54,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1717739637, now seen corresponding path program 1 times [2020-08-19 04:23:54,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:54,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1583060863] [2020-08-19 04:23:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:55,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:23:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:55,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:56,306 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 04:23:56,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1583060863] [2020-08-19 04:23:56,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:23:56,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-08-19 04:23:56,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271164553] [2020-08-19 04:23:56,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-08-19 04:23:56,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-08-19 04:23:56,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=693, Unknown=0, NotChecked=0, Total=756 [2020-08-19 04:23:56,310 INFO L87 Difference]: Start difference. First operand 182 states and 216 transitions. Second operand 28 states. [2020-08-19 04:23:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:59,125 INFO L93 Difference]: Finished difference Result 371 states and 447 transitions. [2020-08-19 04:23:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 04:23:59,126 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2020-08-19 04:23:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:59,129 INFO L225 Difference]: With dead ends: 371 [2020-08-19 04:23:59,129 INFO L226 Difference]: Without dead ends: 198 [2020-08-19 04:23:59,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 04:23:59,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-08-19 04:23:59,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-08-19 04:23:59,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-08-19 04:23:59,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 217 transitions. [2020-08-19 04:23:59,149 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 217 transitions. Word has length 154 [2020-08-19 04:23:59,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:59,150 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 217 transitions. [2020-08-19 04:23:59,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-08-19 04:23:59,150 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 217 transitions. [2020-08-19 04:23:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 04:23:59,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:59,153 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 04:23:59,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:59,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:59,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2084601485, now seen corresponding path program 1 times [2020-08-19 04:23:59,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:59,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653130941] [2020-08-19 04:23:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:23:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:23:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:23:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:23:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:23:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:59,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:23:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:24:00,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:24:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:00,494 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 04:24:00,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653130941] [2020-08-19 04:24:00,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:24:00,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 04:24:00,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563715046] [2020-08-19 04:24:00,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 04:24:00,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 04:24:00,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-08-19 04:24:00,498 INFO L87 Difference]: Start difference. First operand 185 states and 217 transitions. Second operand 22 states. [2020-08-19 04:24:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:02,968 INFO L93 Difference]: Finished difference Result 323 states and 388 transitions. [2020-08-19 04:24:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 04:24:02,968 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 154 [2020-08-19 04:24:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:02,972 INFO L225 Difference]: With dead ends: 323 [2020-08-19 04:24:02,973 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 04:24:02,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 04:24:02,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 04:24:02,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-08-19 04:24:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-08-19 04:24:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 246 transitions. [2020-08-19 04:24:02,992 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 246 transitions. Word has length 154 [2020-08-19 04:24:02,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:02,993 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 246 transitions. [2020-08-19 04:24:02,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 04:24:02,993 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 246 transitions. [2020-08-19 04:24:02,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 04:24:02,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:02,996 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 04:24:02,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:24:02,997 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:24:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1709746076, now seen corresponding path program 1 times [2020-08-19 04:24:02,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:02,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939632905] [2020-08-19 04:24:02,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 04:24:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:03,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:03,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:04,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:04,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:24:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:05,113 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 24 [2020-08-19 04:24:05,919 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 20 [2020-08-19 04:24:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 04:24:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:07,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 04:24:07,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:24:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:08,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:24:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:24:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:09,082 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-08-19 04:24:09,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:37,372 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification. DAG size of input: 449 DAG size of output: 50