/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:00:35,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:00:35,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:00:35,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:00:35,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:00:35,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:00:35,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:00:35,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:00:35,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:00:35,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:00:35,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:00:35,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:00:35,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:00:35,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:00:35,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:00:35,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:00:35,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:00:35,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:00:35,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:00:35,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:00:35,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:00:35,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:00:35,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:00:35,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:00:35,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:00:35,520 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:00:35,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:00:35,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:00:35,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:00:35,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:00:35,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:00:35,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:00:35,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:00:35,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:00:35,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:00:35,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:00:35,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:00:35,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:00:35,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:00:35,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:00:35,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:00:35,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:00:35,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:00:35,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:00:35,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:00:35,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:00:35,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:00:35,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:00:35,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:00:35,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:00:35,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:00:35,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:00:35,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:00:35,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:00:35,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:00:35,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:00:35,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:00:35,551 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:00:35,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:00:35,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:00:35,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:00:35,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:00:35,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:00:35,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:00:35,553 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 22:00:36,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:00:36,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:00:36,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:00:36,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:00:36,052 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:00:36,053 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 22:00:36,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faba64f6/8422093afe5e4402b2dbb03b79c26553/FLAGd216a81a0 [2020-09-04 22:00:36,791 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:00:36,792 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 22:00:36,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faba64f6/8422093afe5e4402b2dbb03b79c26553/FLAGd216a81a0 [2020-09-04 22:00:37,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7faba64f6/8422093afe5e4402b2dbb03b79c26553 [2020-09-04 22:00:37,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:00:37,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:00:37,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:00:37,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:00:37,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:00:37,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:37,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d2a8928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37, skipping insertion in model container [2020-09-04 22:00:37,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:37,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:00:37,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:00:37,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:00:37,776 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:00:37,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:00:37,948 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:00:37,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37 WrapperNode [2020-09-04 22:00:37,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:00:37,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:00:37,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:00:37,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:00:37,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:37,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:37,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:37,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:38,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:38,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:38,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (1/1) ... [2020-09-04 22:00:38,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:00:38,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:00:38,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:00:38,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:00:38,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (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 [2020-09-04 22:00:38,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:00:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:00:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 22:00:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 22:00:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 22:00:38,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-04 22:00:38,163 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-04 22:00:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-04 22:00:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-04 22:00:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-04 22:00:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-04 22:00:38,164 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-04 22:00:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-04 22:00:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-04 22:00:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-04 22:00:38,165 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-04 22:00:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:00:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:00:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:00:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:00:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:00:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:00:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:00:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:00:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:00:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:00:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:00:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:00:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:00:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 22:00:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:00:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:00:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:00:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:00:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:00:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:00:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:00:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:00:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:00:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:00:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:00:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:00:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:00:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:00:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:00:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:00:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-04 22:00:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-04 22:00:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-04 22:00:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-04 22:00:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-04 22:00:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-04 22:00:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:00:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:00:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:00:39,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:00:39,304 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-04 22:00:39,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:00:39 BoogieIcfgContainer [2020-09-04 22:00:39,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:00:39,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:00:39,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:00:39,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:00:39,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:00:37" (1/3) ... [2020-09-04 22:00:39,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1144b538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:00:39, skipping insertion in model container [2020-09-04 22:00:39,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:00:37" (2/3) ... [2020-09-04 22:00:39,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1144b538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:00:39, skipping insertion in model container [2020-09-04 22:00:39,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:00:39" (3/3) ... [2020-09-04 22:00:39,324 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-09-04 22:00:39,339 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:00:39,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 22:00:39,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 22:00:39,407 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:00:39,407 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:00:39,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:00:39,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:00:39,408 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:00:39,408 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:00:39,408 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:00:39,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:00:39,435 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-09-04 22:00:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 22:00:39,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:39,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:39,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-09-04 22:00:39,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:39,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740726649] [2020-09-04 22:00:39,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:00:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:39,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:40,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:40,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-04 22:00:40,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740726649] [2020-09-04 22:00:40,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:00:40,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:00:40,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217140216] [2020-09-04 22:00:40,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:00:40,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:40,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:00:40,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:00:40,242 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-09-04 22:00:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:41,013 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-09-04 22:00:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 22:00:41,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-04 22:00:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:41,038 INFO L225 Difference]: With dead ends: 568 [2020-09-04 22:00:41,038 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 22:00:41,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:00:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 22:00:41,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-09-04 22:00:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 22:00:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-09-04 22:00:41,217 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-09-04 22:00:41,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:41,218 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-09-04 22:00:41,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:00:41,218 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-09-04 22:00:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 22:00:41,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:41,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:00:41,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:00:41,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:41,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-09-04 22:00:41,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:41,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726569308] [2020-09-04 22:00:41,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:00:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-04 22:00:41,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726569308] [2020-09-04 22:00:41,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:41,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-04 22:00:41,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16141017] [2020-09-04 22:00:42,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 22:00:42,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:42,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 22:00:42,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:00:42,002 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-09-04 22:00:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:44,160 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-09-04 22:00:44,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 22:00:44,161 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-04 22:00:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:44,166 INFO L225 Difference]: With dead ends: 542 [2020-09-04 22:00:44,166 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 22:00:44,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-09-04 22:00:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 22:00:44,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-09-04 22:00:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 22:00:44,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-09-04 22:00:44,209 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-09-04 22:00:44,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:44,210 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-09-04 22:00:44,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 22:00:44,210 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-09-04 22:00:44,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-04 22:00:44,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:44,216 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:00:44,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:00:44,216 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:44,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:44,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-09-04 22:00:44,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:44,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300539657] [2020-09-04 22:00:44,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:00:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:44,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:00:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:45,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-04 22:00:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:45,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:00:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:46,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 137 proven. 47 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-04 22:00:47,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300539657] [2020-09-04 22:00:47,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:47,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-09-04 22:00:47,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064103640] [2020-09-04 22:00:47,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 22:00:47,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:47,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 22:00:47,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 22:00:47,598 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-09-04 22:00:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:00:56,018 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-09-04 22:00:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 22:00:56,019 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-09-04 22:00:56,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:00:56,032 INFO L225 Difference]: With dead ends: 574 [2020-09-04 22:00:56,032 INFO L226 Difference]: Without dead ends: 311 [2020-09-04 22:00:56,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 22:00:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-04 22:00:56,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-09-04 22:00:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-04 22:00:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-09-04 22:00:56,131 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-09-04 22:00:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:00:56,132 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-09-04 22:00:56,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 22:00:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-09-04 22:00:56,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 22:00:56,154 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:00:56,154 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:00:56,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:00:56,155 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:00:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:00:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-09-04 22:00:56,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:00:56,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348611179] [2020-09-04 22:00:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:00:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:00:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:56,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:00:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:57,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:00:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:00:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:00:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:00:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:00:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:00:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:58,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:00:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:00:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 38 proven. 38 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-09-04 22:00:59,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348611179] [2020-09-04 22:00:59,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:00:59,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-04 22:00:59,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826188558] [2020-09-04 22:00:59,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 22:00:59,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:00:59,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 22:00:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-09-04 22:00:59,287 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-09-04 22:01:00,827 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 22:01:01,028 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-09-04 22:01:01,288 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 22:01:01,560 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-09-04 22:01:01,805 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 22:01:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:06,965 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-09-04 22:01:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 22:01:06,969 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-09-04 22:01:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:06,974 INFO L225 Difference]: With dead ends: 588 [2020-09-04 22:01:06,975 INFO L226 Difference]: Without dead ends: 317 [2020-09-04 22:01:06,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 22:01:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-04 22:01:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-09-04 22:01:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 22:01:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-09-04 22:01:07,017 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-09-04 22:01:07,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:07,019 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-09-04 22:01:07,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 22:01:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-09-04 22:01:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-04 22:01:07,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:07,025 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:07,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:01:07,026 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:07,026 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-09-04 22:01:07,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:07,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787974284] [2020-09-04 22:01:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:07,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:08,999 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-09-04 22:01:09,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 22:01:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:09,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 25 proven. 40 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2020-09-04 22:01:10,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787974284] [2020-09-04 22:01:10,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:10,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-04 22:01:10,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310061218] [2020-09-04 22:01:10,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 22:01:10,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:10,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 22:01:10,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-04 22:01:10,167 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-09-04 22:01:10,725 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-04 22:01:11,151 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-04 22:01:12,415 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-04 22:01:13,268 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 22:01:14,325 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-04 22:01:14,972 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 22:01:19,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:19,766 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-09-04 22:01:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 22:01:19,771 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-09-04 22:01:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:19,775 INFO L225 Difference]: With dead ends: 592 [2020-09-04 22:01:19,775 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 22:01:19,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 22:01:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 22:01:19,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-09-04 22:01:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 22:01:19,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-09-04 22:01:19,811 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-09-04 22:01:19,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:19,811 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-09-04 22:01:19,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 22:01:19,812 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-09-04 22:01:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-04 22:01:19,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:19,816 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-04 22:01:19,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:01:19,817 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:19,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:19,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-09-04 22:01:19,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:19,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878179701] [2020-09-04 22:01:19,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:20,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:01:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:21,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:22,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2020-09-04 22:01:22,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878179701] [2020-09-04 22:01:22,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:01:22,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-04 22:01:22,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626476009] [2020-09-04 22:01:22,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 22:01:22,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:01:22,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 22:01:22,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-09-04 22:01:22,707 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-09-04 22:01:27,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:01:27,746 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-09-04 22:01:27,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 22:01:27,754 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-09-04 22:01:27,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:01:27,758 INFO L225 Difference]: With dead ends: 527 [2020-09-04 22:01:27,758 INFO L226 Difference]: Without dead ends: 417 [2020-09-04 22:01:27,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 22:01:27,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-04 22:01:27,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-09-04 22:01:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-04 22:01:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-09-04 22:01:27,807 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-09-04 22:01:27,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:01:27,808 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-09-04 22:01:27,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 22:01:27,808 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-09-04 22:01:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-04 22:01:27,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:01:27,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2020-09-04 22:01:27,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:01:27,813 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 22:01:27,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:01:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-09-04 22:01:27,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:01:27,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415075330] [2020-09-04 22:01:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:01:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:28,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 22:01:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 22:01:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 22:01:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 22:01:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 22:01:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:30,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 22:01:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:31,952 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-09-04 22:01:32,206 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-09-04 22:01:32,406 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 22:01:32,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 22:01:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:33,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 22:01:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:01:35,292 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-04 22:01:35,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:01:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:11:31,770 WARN L193 SmtUtils]: Spent 51.83 s on a formula simplification. DAG size of input: 926 DAG size of output: 48