/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:22:59,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:22:59,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:22:59,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:22:59,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:22:59,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:22:59,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:22:59,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:22:59,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:22:59,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:22:59,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:22:59,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:22:59,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:22:59,611 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:22:59,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:22:59,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:22:59,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:22:59,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:22:59,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:22:59,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:22:59,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:22:59,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:22:59,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:22:59,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:22:59,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:22:59,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:22:59,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:22:59,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:22:59,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:22:59,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:22:59,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:22:59,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:22:59,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:22:59,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:22:59,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:22:59,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:22:59,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:22:59,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:22:59,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:22:59,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:22:59,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:22:59,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:22:59,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:22:59,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:22:59,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:22:59,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:22:59,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:22:59,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:22:59,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:22:59,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:22:59,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:22:59,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:22:59,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:22:59,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:22:59,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:22:59,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:22:59,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:22:59,681 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:22:59,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:22:59,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:22:59,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:22:59,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:22:59,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:22:59,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:22:59,683 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:22:59,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:00,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:00,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:00,022 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:00,023 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:00,024 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-07 13:23:00,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36af350a/5e3cbdc676ea450bb119dfc5413bc9aa/FLAG98045ce3c [2020-07-07 13:23:00,784 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:00,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/dll_of_dll-2.i [2020-07-07 13:23:00,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36af350a/5e3cbdc676ea450bb119dfc5413bc9aa/FLAG98045ce3c [2020-07-07 13:23:01,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36af350a/5e3cbdc676ea450bb119dfc5413bc9aa [2020-07-07 13:23:01,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:01,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:01,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:01,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:01,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:01,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d91636e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01, skipping insertion in model container [2020-07-07 13:23:01,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:01,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:01,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:01,668 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:01,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:01,855 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:01,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01 WrapperNode [2020-07-07 13:23:01,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:01,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:01,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:01,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:01,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... [2020-07-07 13:23:01,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:01,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:01,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:01,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:01,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-07 13:23:02,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-07-07 13:23:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:23:02,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:23:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-07 13:23:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_slave [2020-07-07 13:23:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die_master [2020-07-07 13:23:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_slave [2020-07-07 13:23:02,029 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_generic [2020-07-07 13:23:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_slave [2020-07-07 13:23:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_slave [2020-07-07 13:23:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_nested_lists [2020-07-07 13:23:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_reinit_nested_lists [2020-07-07 13:23:02,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy_master [2020-07-07 13:23:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert_master [2020-07-07 13:23:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create_master [2020-07-07 13:23:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_base [2020-07-07 13:23:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_full [2020-07-07 13:23:02,031 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_dangling [2020-07-07 13:23:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_init [2020-07-07 13:23:02,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:02,032 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:02,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:02,034 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:02,035 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:02,036 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:02,037 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:02,038 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:02,039 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:02,041 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:02,042 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:02,043 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:02,044 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:02,045 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:23:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:02,046 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:02,047 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:23:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:02,048 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:23:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:23:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:02,053 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:02,054 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:02,055 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:02,056 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:23:02,057 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_slave [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:02,058 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die_master [2020-07-07 13:23:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_slave [2020-07-07 13:23:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_generic [2020-07-07 13:23:02,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_slave [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_slave [2020-07-07 13:23:02,060 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_nested_lists [2020-07-07 13:23:02,061 INFO L130 BoogieDeclarations]: Found specification of procedure dll_reinit_nested_lists [2020-07-07 13:23:02,061 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy_master [2020-07-07 13:23:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert_master [2020-07-07 13:23:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create_master [2020-07-07 13:23:02,065 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_base [2020-07-07 13:23:02,066 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_full [2020-07-07 13:23:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_dangling [2020-07-07 13:23:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_init [2020-07-07 13:23:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:03,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:03,067 INFO L295 CfgBuilder]: Removed 38 assume(true) statements. [2020-07-07 13:23:03,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:03 BoogieIcfgContainer [2020-07-07 13:23:03,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:03,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:03,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:03,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:03,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:01" (1/3) ... [2020-07-07 13:23:03,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dd282d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:03, skipping insertion in model container [2020-07-07 13:23:03,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:01" (2/3) ... [2020-07-07 13:23:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dd282d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:03, skipping insertion in model container [2020-07-07 13:23:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:03" (3/3) ... [2020-07-07 13:23:03,083 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_of_dll-2.i [2020-07-07 13:23:03,095 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:03,105 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:03,121 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:03,146 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:03,146 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:03,146 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:03,146 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:03,147 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:03,147 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:03,147 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:03,147 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:03,170 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states. [2020-07-07 13:23:03,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-07-07 13:23:03,187 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:03,188 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] [2020-07-07 13:23:03,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:03,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:03,196 INFO L82 PathProgramCache]: Analyzing trace with hash 575468621, now seen corresponding path program 1 times [2020-07-07 13:23:03,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:03,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1262455206] [2020-07-07 13:23:03,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-07-07 13:23:03,909 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:03,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1262455206] [2020-07-07 13:23:03,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:03,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:23:03,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619440480] [2020-07-07 13:23:03,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:23:03,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:03,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:23:03,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:23:03,940 INFO L87 Difference]: Start difference. First operand 276 states. Second operand 4 states. [2020-07-07 13:23:04,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:04,610 INFO L93 Difference]: Finished difference Result 568 states and 767 transitions. [2020-07-07 13:23:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:23:04,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-07-07 13:23:04,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:04,629 INFO L225 Difference]: With dead ends: 568 [2020-07-07 13:23:04,629 INFO L226 Difference]: Without dead ends: 275 [2020-07-07 13:23:04,639 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 [2020-07-07 13:23:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-07-07 13:23:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2020-07-07 13:23:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-07-07 13:23:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2020-07-07 13:23:04,730 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 85 [2020-07-07 13:23:04,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:04,732 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2020-07-07 13:23:04,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:23:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2020-07-07 13:23:04,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-07-07 13:23:04,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:04,737 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] [2020-07-07 13:23:04,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:04,738 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:04,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1893520380, now seen corresponding path program 1 times [2020-07-07 13:23:04,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:04,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913859976] [2020-07-07 13:23:04,739 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-07-07 13:23:05,419 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:05,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913859976] [2020-07-07 13:23:05,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:05,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 13:23:05,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081957339] [2020-07-07 13:23:05,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 13:23:05,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 13:23:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:23:05,422 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand 13 states. [2020-07-07 13:23:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:07,296 INFO L93 Difference]: Finished difference Result 542 states and 621 transitions. [2020-07-07 13:23:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:23:07,296 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-07-07 13:23:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:07,302 INFO L225 Difference]: With dead ends: 542 [2020-07-07 13:23:07,302 INFO L226 Difference]: Without dead ends: 296 [2020-07-07 13:23:07,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:23:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-07-07 13:23:07,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 276. [2020-07-07 13:23:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-07-07 13:23:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 307 transitions. [2020-07-07 13:23:07,351 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 307 transitions. Word has length 87 [2020-07-07 13:23:07,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:07,351 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 307 transitions. [2020-07-07 13:23:07,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 13:23:07,352 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 307 transitions. [2020-07-07 13:23:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-07-07 13:23:07,357 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:07,358 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] [2020-07-07 13:23:07,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:07,358 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1671014528, now seen corresponding path program 1 times [2020-07-07 13:23:07,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:07,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774145498] [2020-07-07 13:23:07,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 115 proven. 38 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-07 13:23:10,384 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:10,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774145498] [2020-07-07 13:23:10,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:10,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-07-07 13:23:10,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406029785] [2020-07-07 13:23:10,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-07-07 13:23:10,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:10,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-07-07 13:23:10,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1540, Unknown=0, NotChecked=0, Total=1640 [2020-07-07 13:23:10,388 INFO L87 Difference]: Start difference. First operand 276 states and 307 transitions. Second operand 41 states. [2020-07-07 13:23:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:17,829 INFO L93 Difference]: Finished difference Result 574 states and 655 transitions. [2020-07-07 13:23:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 13:23:17,830 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 235 [2020-07-07 13:23:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:17,835 INFO L225 Difference]: With dead ends: 574 [2020-07-07 13:23:17,836 INFO L226 Difference]: Without dead ends: 311 [2020-07-07 13:23:17,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=341, Invalid=5061, Unknown=0, NotChecked=0, Total=5402 [2020-07-07 13:23:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-07-07 13:23:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 286. [2020-07-07 13:23:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-07-07 13:23:17,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 319 transitions. [2020-07-07 13:23:17,883 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 319 transitions. Word has length 235 [2020-07-07 13:23:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:17,888 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 319 transitions. [2020-07-07 13:23:17,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-07-07 13:23:17,888 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 319 transitions. [2020-07-07 13:23:17,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-07 13:23:17,892 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:17,892 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] [2020-07-07 13:23:17,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:17,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:17,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1561006854, now seen corresponding path program 1 times [2020-07-07 13:23:17,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:17,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056434153] [2020-07-07 13:23:17,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:19,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-07-07 13:23:20,274 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:20,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056434153] [2020-07-07 13:23:20,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:20,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2020-07-07 13:23:20,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144782068] [2020-07-07 13:23:20,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-07-07 13:23:20,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:20,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-07-07 13:23:20,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2020-07-07 13:23:20,277 INFO L87 Difference]: Start difference. First operand 286 states and 319 transitions. Second operand 34 states. [2020-07-07 13:23:21,392 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-07-07 13:23:22,202 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-07-07 13:23:26,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:26,927 INFO L93 Difference]: Finished difference Result 588 states and 663 transitions. [2020-07-07 13:23:26,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-07 13:23:26,930 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 237 [2020-07-07 13:23:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:26,935 INFO L225 Difference]: With dead ends: 588 [2020-07-07 13:23:26,936 INFO L226 Difference]: Without dead ends: 317 [2020-07-07 13:23:26,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=270, Invalid=3036, Unknown=0, NotChecked=0, Total=3306 [2020-07-07 13:23:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-07-07 13:23:26,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 295. [2020-07-07 13:23:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-07-07 13:23:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 329 transitions. [2020-07-07 13:23:26,979 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 329 transitions. Word has length 237 [2020-07-07 13:23:26,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:26,980 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 329 transitions. [2020-07-07 13:23:26,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-07-07 13:23:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 329 transitions. [2020-07-07 13:23:26,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-07-07 13:23:26,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:26,985 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] [2020-07-07 13:23:26,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:26,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash -978473208, now seen corresponding path program 1 times [2020-07-07 13:23:26,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:26,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11353814] [2020-07-07 13:23:26,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,640 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-07-07 13:23:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-07-07 13:23:29,434 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:29,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11353814] [2020-07-07 13:23:29,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:29,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-07 13:23:29,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712961550] [2020-07-07 13:23:29,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 13:23:29,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:29,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 13:23:29,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-07-07 13:23:29,438 INFO L87 Difference]: Start difference. First operand 295 states and 329 transitions. Second operand 25 states. [2020-07-07 13:23:30,031 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-07-07 13:23:30,424 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-07-07 13:23:31,499 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-07-07 13:23:32,059 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-07-07 13:23:32,684 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-07-07 13:23:33,280 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2020-07-07 13:23:37,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:37,362 INFO L93 Difference]: Finished difference Result 592 states and 661 transitions. [2020-07-07 13:23:37,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:23:37,369 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 239 [2020-07-07 13:23:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:37,372 INFO L225 Difference]: With dead ends: 592 [2020-07-07 13:23:37,373 INFO L226 Difference]: Without dead ends: 315 [2020-07-07 13:23:37,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 13:23:37,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-07 13:23:37,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-07-07 13:23:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-07-07 13:23:37,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 327 transitions. [2020-07-07 13:23:37,406 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 327 transitions. Word has length 239 [2020-07-07 13:23:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:37,407 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 327 transitions. [2020-07-07 13:23:37,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 13:23:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 327 transitions. [2020-07-07 13:23:37,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-07 13:23:37,411 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:37,411 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, 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, 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] [2020-07-07 13:23:37,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:23:37,412 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:37,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1460243349, now seen corresponding path program 1 times [2020-07-07 13:23:37,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:37,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633049227] [2020-07-07 13:23:37,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-07-07 13:23:39,605 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:39,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633049227] [2020-07-07 13:23:39,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:39,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-07 13:23:39,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124260376] [2020-07-07 13:23:39,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-07 13:23:39,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-07 13:23:39,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=541, Unknown=0, NotChecked=0, Total=600 [2020-07-07 13:23:39,608 INFO L87 Difference]: Start difference. First operand 295 states and 327 transitions. Second operand 25 states. [2020-07-07 13:23:40,841 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-07-07 13:23:41,183 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-07-07 13:23:41,527 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-07-07 13:23:41,820 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-07-07 13:23:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:45,148 INFO L93 Difference]: Finished difference Result 594 states and 668 transitions. [2020-07-07 13:23:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:23:45,153 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 240 [2020-07-07 13:23:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:45,156 INFO L225 Difference]: With dead ends: 594 [2020-07-07 13:23:45,156 INFO L226 Difference]: Without dead ends: 315 [2020-07-07 13:23:45,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 13:23:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-07-07 13:23:45,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 295. [2020-07-07 13:23:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-07-07 13:23:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 325 transitions. [2020-07-07 13:23:45,192 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 325 transitions. Word has length 240 [2020-07-07 13:23:45,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:45,193 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 325 transitions. [2020-07-07 13:23:45,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-07 13:23:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 325 transitions. [2020-07-07 13:23:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-07-07 13:23:45,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:45,196 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] [2020-07-07 13:23:45,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:23:45,197 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:45,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:45,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1063198871, now seen corresponding path program 1 times [2020-07-07 13:23:45,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:45,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88214574] [2020-07-07 13:23:45,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-07-07 13:23:46,847 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:46,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88214574] [2020-07-07 13:23:46,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:46,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-07 13:23:46,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719524976] [2020-07-07 13:23:46,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 13:23:46,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:46,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 13:23:46,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-07-07 13:23:46,851 INFO L87 Difference]: Start difference. First operand 295 states and 325 transitions. Second operand 24 states. [2020-07-07 13:23:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:51,166 INFO L93 Difference]: Finished difference Result 527 states and 590 transitions. [2020-07-07 13:23:51,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-07-07 13:23:51,167 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 238 [2020-07-07 13:23:51,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:51,171 INFO L225 Difference]: With dead ends: 527 [2020-07-07 13:23:51,171 INFO L226 Difference]: Without dead ends: 417 [2020-07-07 13:23:51,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 13:23:51,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-07-07 13:23:51,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 332. [2020-07-07 13:23:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-07-07 13:23:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 367 transitions. [2020-07-07 13:23:51,227 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 367 transitions. Word has length 238 [2020-07-07 13:23:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:51,230 INFO L479 AbstractCegarLoop]: Abstraction has 332 states and 367 transitions. [2020-07-07 13:23:51,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 13:23:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 367 transitions. [2020-07-07 13:23:51,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-07 13:23:51,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:51,232 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] [2020-07-07 13:23:51,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:23:51,232 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:51,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1682472288, now seen corresponding path program 1 times [2020-07-07 13:23:51,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:51,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109582918] [2020-07-07 13:23:51,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:54,060 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 27 [2020-07-07 13:23:54,860 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 41 [2020-07-07 13:23:57,308 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 24 [2020-07-07 13:23:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:04,150 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-07-07 13:24:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:26:23,458 WARN L193 SmtUtils]: Spent 4.91 s on a formula simplification. DAG size of input: 429 DAG size of output: 50