/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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:34:42,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:34:42,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:34:42,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:34:42,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:34:42,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:34:42,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:34:42,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:34:42,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:34:42,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:34:42,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:34:42,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:34:42,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:34:42,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:34:42,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:34:42,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:34:42,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:34:42,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:34:42,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:34:42,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:34:42,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:34:42,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:34:42,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:34:42,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:34:42,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:34:42,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:34:42,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:34:42,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:34:42,590 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:34:42,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:34:42,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:34:42,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:34:42,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:34:42,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:34:42,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:34:42,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:34:42,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:34:42,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:34:42,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:34:42,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:34:42,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:34:42,601 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 16:34:42,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:34:42,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:34:42,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:34:42,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:34:42,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:34:42,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:34:42,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:34:42,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:34:42,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:34:42,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:34:42,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:34:42,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:34:42,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:34:42,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:34:42,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:34:42,618 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:34:42,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:34:42,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:34:42,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:34:42,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:34:42,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:34:42,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:34:42,620 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:34:43,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:34:43,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:34:43,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:34:43,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:34:43,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:34:43,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 16:34:43,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb53f2fe2/d978a5f5e95846c190f957f56b555587/FLAG5aabbc159 [2020-09-04 16:34:43,890 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:34:43,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/dll_of_dll-1.i [2020-09-04 16:34:43,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb53f2fe2/d978a5f5e95846c190f957f56b555587/FLAG5aabbc159 [2020-09-04 16:34:44,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fb53f2fe2/d978a5f5e95846c190f957f56b555587 [2020-09-04 16:34:44,178 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:34:44,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:34:44,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:34:44,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:34:44,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:34:44,187 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42db8c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44, skipping insertion in model container [2020-09-04 16:34:44,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:34:44,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:34:44,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:34:44,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:34:44,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:34:44,891 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:34:44,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44 WrapperNode [2020-09-04 16:34:44,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:34:44,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:34:44,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:34:44,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:34:44,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (1/1) ... [2020-09-04 16:34:44,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:34:44,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:34:44,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:34:44,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:34:44,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (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 16:34:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:34:45,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:34:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 16:34:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 16:34:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 16:34:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-04 16:34:45,090 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-09-04 16:34:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-09-04 16:34:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-09-04 16:34:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-09-04 16:34:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-09-04 16:34:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-09-04 16:34:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-09-04 16:34:45,093 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-09-04 16:34:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-09-04 16:34:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-09-04 16:34:45,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-09-04 16:34:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-09-04 16:34:45,095 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-09-04 16:34:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-09-04 16:34:45,097 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-09-04 16:34:45,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:34:45,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:34:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:34:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:34:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:34:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:34:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:34:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:34:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:34:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:34:45,101 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:34:45,103 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:34:45,104 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:34:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:34:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:34:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:34:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:34:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:34:45,107 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:34:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:34:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:34:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:34:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:34:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:34:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:34:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:34:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:34:45,110 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:34:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:34:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:34:45,111 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:34:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:34:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:34:45,112 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:34:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:34:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:34:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:34:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:34:45,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:34:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:34:45,114 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:34:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:34:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:34:45,115 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:34:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:34:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:34:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:34:45,116 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:34:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:34:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:34:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:34:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:34:45,117 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:34:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:34:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:34:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:34:45,118 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:34:45,119 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:34:45,120 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:34:45,121 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:34:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:34:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:34:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:34:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:34:45,122 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:34:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:34:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:34:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-09-04 16:34:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:34:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-04 16:34:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 16:34:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:34:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-09-04 16:34:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-09-04 16:34:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-09-04 16:34:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-09-04 16:34:45,127 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-09-04 16:34:45,132 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-09-04 16:34:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-09-04 16:34:45,133 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-09-04 16:34:45,134 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-09-04 16:34:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-09-04 16:34:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-09-04 16:34:45,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:34:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:34:45,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:34:46,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:34:46,119 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-09-04 16:34:46,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:34:46 BoogieIcfgContainer [2020-09-04 16:34:46,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:34:46,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:34:46,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:34:46,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:34:46,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:34:44" (1/3) ... [2020-09-04 16:34:46,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d97a282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:34:46, skipping insertion in model container [2020-09-04 16:34:46,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:34:44" (2/3) ... [2020-09-04 16:34:46,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d97a282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:34:46, skipping insertion in model container [2020-09-04 16:34:46,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:34:46" (3/3) ... [2020-09-04 16:34:46,137 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-1.i [2020-09-04 16:34:46,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:34:46,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:34:46,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:34:46,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:34:46,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:34:46,205 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:34:46,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:34:46,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:34:46,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:34:46,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:34:46,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:34:46,231 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-09-04 16:34:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:34:46,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:46,253 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 16:34:46,253 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:46,262 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-09-04 16:34:46,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:46,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768756802] [2020-09-04 16:34:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:46,365 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:34:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:34:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:34:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:46,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:47,031 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 16:34:47,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768756802] [2020-09-04 16:34:47,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:47,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:34:47,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233275903] [2020-09-04 16:34:47,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:34:47,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:47,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:34:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:34:47,068 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-09-04 16:34:47,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:47,734 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-09-04 16:34:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 16:34:47,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-04 16:34:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:47,755 INFO L225 Difference]: With dead ends: 568 [2020-09-04 16:34:47,755 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 16:34:47,765 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 16:34:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 16:34:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-09-04 16:34:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-09-04 16:34:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-09-04 16:34:47,901 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-09-04 16:34:47,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:47,903 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-09-04 16:34:47,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:34:47,903 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-09-04 16:34:47,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-04 16:34:47,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:47,916 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 16:34:47,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:34:47,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:47,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-09-04 16:34:47,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:47,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525568141] [2020-09-04 16:34:47,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:47,931 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:48,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:34:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:34:48,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:34:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:48,497 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 16:34:48,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525568141] [2020-09-04 16:34:48,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:48,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 16:34:48,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660801244] [2020-09-04 16:34:48,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 16:34:48,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:48,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 16:34:48,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-04 16:34:48,529 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-09-04 16:34:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:34:50,658 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-09-04 16:34:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:34:50,665 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-04 16:34:50,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:34:50,673 INFO L225 Difference]: With dead ends: 542 [2020-09-04 16:34:50,673 INFO L226 Difference]: Without dead ends: 296 [2020-09-04 16:34:50,676 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 16:34:50,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-04 16:34:50,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-09-04 16:34:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-04 16:34:50,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-09-04 16:34:50,716 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-09-04 16:34:50,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:34:50,717 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-09-04 16:34:50,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 16:34:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-09-04 16:34:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-04 16:34:50,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:34:50,720 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 16:34:50,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:34:50,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:34:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:34:50,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-09-04 16:34:50,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:34:50,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986528091] [2020-09-04 16:34:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:34:50,778 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:34:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:34:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:34:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:34:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:34:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:34:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-09-04 16:34:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:34:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:34:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:34:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:34:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:34:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:53,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:34:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:34:54,058 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 16:34:54,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986528091] [2020-09-04 16:34:54,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:34:54,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 16:34:54,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848681447] [2020-09-04 16:34:54,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 16:34:54,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:34:54,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 16:34:54,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1392, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 16:34:54,062 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 39 states. [2020-09-04 16:34:56,532 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 16:35:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:02,186 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-09-04 16:35:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-09-04 16:35:02,187 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-09-04 16:35:02,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:02,191 INFO L225 Difference]: With dead ends: 574 [2020-09-04 16:35:02,191 INFO L226 Difference]: Without dead ends: 311 [2020-09-04 16:35:02,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=327, Invalid=4785, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 16:35:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-04 16:35:02,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-09-04 16:35:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-09-04 16:35:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-09-04 16:35:02,243 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-09-04 16:35:02,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:02,244 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-09-04 16:35:02,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 16:35:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-09-04 16:35:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-09-04 16:35:02,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:02,248 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 16:35:02,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:35:02,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:02,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:02,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-09-04 16:35:02,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:02,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634604898] [2020-09-04 16:35:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:02,278 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:35:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:03,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:04,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:05,027 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 16:35:05,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634604898] [2020-09-04 16:35:05,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:05,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-09-04 16:35:05,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620939497] [2020-09-04 16:35:05,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-04 16:35:05,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-04 16:35:05,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2020-09-04 16:35:05,035 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 32 states. [2020-09-04 16:35:06,284 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-09-04 16:35:06,496 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 16:35:06,935 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 16:35:07,203 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-09-04 16:35:07,425 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-09-04 16:35:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:12,354 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-09-04 16:35:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 16:35:12,355 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2020-09-04 16:35:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:12,361 INFO L225 Difference]: With dead ends: 588 [2020-09-04 16:35:12,361 INFO L226 Difference]: Without dead ends: 317 [2020-09-04 16:35:12,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=256, Invalid=2824, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 16:35:12,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-09-04 16:35:12,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-09-04 16:35:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 16:35:12,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-09-04 16:35:12,428 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-09-04 16:35:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:12,429 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-09-04 16:35:12,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-04 16:35:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-09-04 16:35:12,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-04 16:35:12,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:12,433 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 16:35:12,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:35:12,433 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:12,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:12,434 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-09-04 16:35:12,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:12,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593464142] [2020-09-04 16:35:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:12,453 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:12,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,105 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-09-04 16:35:14,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:35:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-04 16:35:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:35:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:14,862 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 16:35:14,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593464142] [2020-09-04 16:35:14,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:14,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:35:14,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543736676] [2020-09-04 16:35:14,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:35:14,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:14,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:35:14,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:35:14,866 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 23 states. [2020-09-04 16:35:15,408 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-09-04 16:35:15,936 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-09-04 16:35:17,135 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-09-04 16:35:17,920 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 16:35:18,739 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-09-04 16:35:19,365 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-09-04 16:35:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:23,648 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-09-04 16:35:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 16:35:23,649 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 239 [2020-09-04 16:35:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:23,652 INFO L225 Difference]: With dead ends: 592 [2020-09-04 16:35:23,653 INFO L226 Difference]: Without dead ends: 315 [2020-09-04 16:35:23,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 16:35:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-09-04 16:35:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-09-04 16:35:23,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-04 16:35:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-09-04 16:35:23,685 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-09-04 16:35:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:23,686 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-09-04 16:35:23,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:35:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-09-04 16:35:23,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-09-04 16:35:23,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:23,689 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 16:35:23,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:35:23,690 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:23,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:23,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-09-04 16:35:23,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:23,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387602192] [2020-09-04 16:35:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:23,712 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:23,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:23,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:35:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:35:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:25,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:26,224 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 16:35:26,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387602192] [2020-09-04 16:35:26,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:35:26,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-09-04 16:35:26,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190188913] [2020-09-04 16:35:26,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 16:35:26,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:35:26,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 16:35:26,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-09-04 16:35:26,229 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 24 states. [2020-09-04 16:35:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:35:30,896 INFO L93 Difference]: Finished difference Result 527 states and 592 transitions. [2020-09-04 16:35:30,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-04 16:35:30,902 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-09-04 16:35:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:35:30,906 INFO L225 Difference]: With dead ends: 527 [2020-09-04 16:35:30,906 INFO L226 Difference]: Without dead ends: 417 [2020-09-04 16:35:30,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:35:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-09-04 16:35:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-09-04 16:35:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-09-04 16:35:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2020-09-04 16:35:30,951 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 238 [2020-09-04 16:35:30,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:35:30,952 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2020-09-04 16:35:30,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 16:35:30,952 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2020-09-04 16:35:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-04 16:35:30,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:35:30,956 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 16:35:30,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:35:30,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:35:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:35:30,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-09-04 16:35:30,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:35:30,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490973774] [2020-09-04 16:35:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:35:30,978 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:35:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 16:35:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:31,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:35:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 16:35:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 16:35:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 16:35:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:33,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 16:35:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:34,417 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-09-04 16:35:34,674 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-09-04 16:35:34,872 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-09-04 16:35:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:35:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:35,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 16:35:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:35:37,292 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-09-04 16:35:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:35:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:44:49,622 WARN L193 SmtUtils]: Spent 49.44 s on a formula simplification. DAG size of input: 926 DAG size of output: 48