/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:35:27,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:35:27,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:35:27,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:35:27,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:35:27,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:35:27,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:35:27,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:35:27,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:35:27,806 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:35:27,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:35:27,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:35:27,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:35:27,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:35:27,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:35:27,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:35:27,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:35:27,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:35:27,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:35:27,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:35:27,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:35:27,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:35:27,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:35:27,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:35:27,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:35:27,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:35:27,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:35:27,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:35:27,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:35:27,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:35:27,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:35:27,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:35:27,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:35:27,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:35:27,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:35:27,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:35:27,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:35:27,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:35:27,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:35:27,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:35:27,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:35:27,838 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 16:35:27,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:35:27,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:35:27,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:35:27,860 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:35:27,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:35:27,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:35:27,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:35:27,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:35:27,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:35:27,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:35:27,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:35:27,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:35:27,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:35:27,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:35:27,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:35:27,864 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:35:27,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:35:27,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:35:27,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:35:27,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:35:27,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:35:27,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:35:27,865 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:35:28,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:35:28,353 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:35:28,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:35:28,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:35:28,361 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:35:28,362 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-04 16:35:28,449 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d77ea59/e4b62e9045074704b49d767d56937324/FLAGf800c1f77 [2020-09-04 16:35:29,073 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:35:29,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-09-04 16:35:29,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d77ea59/e4b62e9045074704b49d767d56937324/FLAGf800c1f77 [2020-09-04 16:35:29,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d77ea59/e4b62e9045074704b49d767d56937324 [2020-09-04 16:35:29,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:35:29,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:35:29,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:35:29,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:35:29,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:35:29,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:35:29" (1/1) ... [2020-09-04 16:35:29,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391177e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:29, skipping insertion in model container [2020-09-04 16:35:29,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:35:29" (1/1) ... [2020-09-04 16:35:29,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:35:29,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:35:30,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:35:30,011 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:35:30,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:35:30,137 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:35:30,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30 WrapperNode [2020-09-04 16:35:30,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:35:30,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:35:30,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:35:30,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:35:30,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,225 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (1/1) ... [2020-09-04 16:35:30,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:35:30,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:35:30,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:35:30,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:35:30,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (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 16:35:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:35:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:35:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 16:35:30,310 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 16:35:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 16:35:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-04 16:35:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-04 16:35:30,311 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-04 16:35:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-04 16:35:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-04 16:35:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-04 16:35:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-04 16:35:30,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-04 16:35:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-04 16:35:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-04 16:35:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-04 16:35:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-04 16:35:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-04 16:35:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-04 16:35:30,315 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-04 16:35:30,316 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-04 16:35:30,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:35:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:35:30,318 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:35:30,319 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:35:30,320 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:35:30,321 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:35:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:35:30,322 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:35:30,323 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:35:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:35:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:35:30,324 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:35:30,325 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:35:30,326 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:35:30,327 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:35:30,328 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:35:30,329 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:35:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:35:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:35:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:35:30,330 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:35:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:35:30,331 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:35:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:35:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:35:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:35:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:35:30,332 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:35:30,333 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:35:30,334 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:35:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:35:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:35:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:35:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:35:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:35:30,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:35:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:35:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:35:30,337 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:35:30,338 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:35:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:35:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:35:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:35:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:35:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:35:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-04 16:35:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:35:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-04 16:35:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:35:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 16:35:30,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 16:35:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:35:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-04 16:35:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-04 16:35:30,345 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-04 16:35:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-04 16:35:30,346 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-04 16:35:30,350 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-04 16:35:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-04 16:35:30,351 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-04 16:35:30,352 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-04 16:35:30,359 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-04 16:35:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-04 16:35:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:35:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:35:30,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:35:31,247 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:35:31,248 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-04 16:35:31,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:35:31 BoogieIcfgContainer [2020-09-04 16:35:31,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:35:31,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:35:31,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:35:31,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:35:31,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:35:29" (1/3) ... [2020-09-04 16:35:31,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa76cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:35:31, skipping insertion in model container [2020-09-04 16:35:31,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:35:30" (2/3) ... [2020-09-04 16:35:31,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa76cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:35:31, skipping insertion in model container [2020-09-04 16:35:31,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:35:31" (3/3) ... [2020-09-04 16:35:31,264 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-09-04 16:35:31,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:35:31,287 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:35:31,306 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:35:31,332 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:35:31,332 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:35:31,332 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:35:31,332 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:35:31,332 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:35:31,332 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:35:31,333 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:35:31,333 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:35:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-09-04 16:35:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:35:31,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:31,376 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 16:35:31,376 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:31,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:31,384 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-09-04 16:35:31,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:31,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647810375] [2020-09-04 16:35:31,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:31,484 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,112 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 16:35:32,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647810375] [2020-09-04 16:35:32,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:32,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:35:32,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510917699] [2020-09-04 16:35:32,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:35:32,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:32,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:35:32,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:35:32,148 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-09-04 16:35:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:32,811 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-09-04 16:35:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:35:32,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-04 16:35:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:32,831 INFO L225 Difference]: With dead ends: 568 [2020-09-04 16:35:32,832 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 16:35:32,840 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 16:35:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 16:35:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-09-04 16:35:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 16:35:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-09-04 16:35:32,941 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-09-04 16:35:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:32,941 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-09-04 16:35:32,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:35:32,943 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-09-04 16:35:32,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 16:35:32,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:32,954 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 16:35:32,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:35:32,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:32,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:32,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-09-04 16:35:32,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:32,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211065528] [2020-09-04 16:35:32,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:32,965 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,494 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 16:35:33,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211065528] [2020-09-04 16:35:33,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:33,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:35:33,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735939279] [2020-09-04 16:35:33,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:35:33,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:33,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:35:33,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:35:33,498 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-09-04 16:35:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:35,631 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-09-04 16:35:35,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:35:35,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-04 16:35:35,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:35,641 INFO L225 Difference]: With dead ends: 542 [2020-09-04 16:35:35,641 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 16:35:35,646 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 16:35:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 16:35:35,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-09-04 16:35:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 16:35:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-09-04 16:35:35,685 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-09-04 16:35:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:35,686 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-09-04 16:35:35,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:35:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-09-04 16:35:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-04 16:35:35,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:35,695 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 16:35:35,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:35:35,698 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:35,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-09-04 16:35:35,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:35,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478678578] [2020-09-04 16:35:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:35,754 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:36,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-04 16:35:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:38,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-04 16:35:39,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478678578] [2020-09-04 16:35:39,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:39,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 16:35:39,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852192989] [2020-09-04 16:35:39,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 16:35:39,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:39,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 16:35:39,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:35:39,094 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-09-04 16:35:41,671 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 16:35:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:47,344 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-09-04 16:35:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 16:35:47,344 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-09-04 16:35:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:47,350 INFO L225 Difference]: With dead ends: 574 [2020-09-04 16:35:47,350 INFO L226 Difference]: Without dead ends: 311 [2020-09-04 16:35:47,354 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 16:35:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-04 16:35:47,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-09-04 16:35:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-04 16:35:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-09-04 16:35:47,400 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-09-04 16:35:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:47,401 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-09-04 16:35:47,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 16:35:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-09-04 16:35:47,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 16:35:47,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:47,405 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 16:35:47,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:35:47,406 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:47,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-09-04 16:35:47,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:47,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472600607] [2020-09-04 16:35:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:47,429 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:47,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:48,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:35:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:49,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-04 16:35:50,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472600607] [2020-09-04 16:35:50,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:50,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-09-04 16:35:50,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484270422] [2020-09-04 16:35:50,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 16:35:50,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:50,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 16:35:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-09-04 16:35:50,383 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-09-04 16:35:51,935 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 16:35:52,359 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 16:35:52,616 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-09-04 16:35:52,865 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 16:35:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:57,986 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-09-04 16:35:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 16:35:57,986 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-09-04 16:35:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:57,992 INFO L225 Difference]: With dead ends: 588 [2020-09-04 16:35:57,992 INFO L226 Difference]: Without dead ends: 317 [2020-09-04 16:35:57,995 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 16:35:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-04 16:35:58,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-09-04 16:35:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 16:35:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-09-04 16:35:58,035 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-09-04 16:35:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:58,036 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-09-04 16:35:58,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 16:35:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-09-04 16:35:58,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-04 16:35:58,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:58,040 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 16:35:58,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:35:58,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-09-04 16:35:58,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:58,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206868040] [2020-09-04 16:35:58,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:58,062 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:58,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:58,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:58,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:58,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:58,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:59,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:59,494 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-09-04 16:36:00,035 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-09-04 16:36:00,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:36:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:00,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:36:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 16:36:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:36:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:00,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:36:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-04 16:36:00,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206868040] [2020-09-04 16:36:00,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:00,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:36:00,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102732273] [2020-09-04 16:36:00,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:36:00,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:00,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:36:00,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:36:00,984 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-09-04 16:36:01,494 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-04 16:36:01,923 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-04 16:36:03,117 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-04 16:36:03,830 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 16:36:04,727 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-04 16:36:05,351 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 16:36:09,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:09,573 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-09-04 16:36:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 16:36:09,574 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-09-04 16:36:09,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:09,583 INFO L225 Difference]: With dead ends: 592 [2020-09-04 16:36:09,584 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 16:36:09,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 16:36:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 16:36:09,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-09-04 16:36:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 16:36:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-09-04 16:36:09,621 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-09-04 16:36:09,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:09,622 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-09-04 16:36:09,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:36:09,622 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-09-04 16:36:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-04 16:36:09,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:09,625 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 16:36:09,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:36:09,626 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:09,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-09-04 16:36:09,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:09,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836013865] [2020-09-04 16:36:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:09,645 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:09,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:36:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:36:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:36:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:36:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:10,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:10,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:36:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:36:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-09-04 16:36:11,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836013865] [2020-09-04 16:36:11,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:36:11,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-09-04 16:36:11,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813388580] [2020-09-04 16:36:11,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 16:36:11,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:36:11,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 16:36:11,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-09-04 16:36:11,762 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-09-04 16:36:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:36:16,455 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-09-04 16:36:16,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 16:36:16,460 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-09-04 16:36:16,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:36:16,464 INFO L225 Difference]: With dead ends: 527 [2020-09-04 16:36:16,464 INFO L226 Difference]: Without dead ends: 417 [2020-09-04 16:36:16,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:36:16,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-04 16:36:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-09-04 16:36:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-04 16:36:16,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-09-04 16:36:16,502 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-09-04 16:36:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:36:16,503 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-09-04 16:36:16,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 16:36:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-09-04 16:36:16,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-04 16:36:16,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:36:16,505 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 16:36:16,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:36:16,505 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:36:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:36:16,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-09-04 16:36:16,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:36:16,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87944913] [2020-09-04 16:36:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:36:16,528 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:36:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:16,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:36:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:17,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:17,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:17,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:36:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:36:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:36:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:18,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:36:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:36:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:19,703 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2020-09-04 16:36:20,011 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2020-09-04 16:36:20,287 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-09-04 16:36:20,517 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-09-04 16:36:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:36:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:21,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:36:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:36:22,703 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-04 16:36:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:36:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:41:06,193 WARN L193 SmtUtils]: Spent 27.78 s on a formula simplification. DAG size of input: 1243 DAG size of output: 48