/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:47:46,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:47:46,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:47:46,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:47:46,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:47:46,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:47:46,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:47:46,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:47:46,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:47:46,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:47:46,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:47:46,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:47:46,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:47:46,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:47:46,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:47:46,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:47:46,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:47:46,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:47:46,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:47:46,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:47:46,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:47:46,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:47:46,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:47:46,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:47:46,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:47:46,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:47:46,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:47:46,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:47:46,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:47:46,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:47:46,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:47:46,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:47:46,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:47:46,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:47:46,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:47:46,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:47:46,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:47:46,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:47:46,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:47:46,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:47:46,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:47:46,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:47:46,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:47:46,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:47:46,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:47:46,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:47:46,598 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:47:46,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:47:46,599 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:47:46,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:47:46,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:47:46,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:47:46,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:47:46,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:47:46,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:47:46,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:47:46,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:47:46,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:47:46,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:47:46,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:47:46,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:47:46,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:47:46,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:47:46,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:47:46,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:47:46,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:47:46,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:47:46,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:47:46,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:47:46,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:47:46,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:47:46,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:47:46,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:47:46,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:47:46,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:47:46,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:47:46,936 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:47:46,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 16:47:47,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30460cfa0/fc6829eaf7f4449db73b40520c9d28d0/FLAGf72e8f7cd [2020-08-22 16:47:47,623 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:47:47,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-22 16:47:47,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30460cfa0/fc6829eaf7f4449db73b40520c9d28d0/FLAGf72e8f7cd [2020-08-22 16:47:47,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30460cfa0/fc6829eaf7f4449db73b40520c9d28d0 [2020-08-22 16:47:47,922 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:47:47,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:47:47,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:47,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:47:47,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:47:47,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:47" (1/1) ... [2020-08-22 16:47:47,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b53cc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:47, skipping insertion in model container [2020-08-22 16:47:47,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:47:47" (1/1) ... [2020-08-22 16:47:47,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:47:47,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:47:48,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:48,458 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:47:48,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:47:48,563 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:47:48,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48 WrapperNode [2020-08-22 16:47:48,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:47:48,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:47:48,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:47:48,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:47:48,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (1/1) ... [2020-08-22 16:47:48,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:47:48,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:47:48,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:47:48,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:47:48,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (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 [2020-08-22 16:47:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:47:48,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:47:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 16:47:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 16:47:48,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 16:47:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 16:47:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 16:47:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 16:47:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 16:47:48,710 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 16:47:48,711 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 16:47:48,712 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 16:47:48,713 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 16:47:48,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 16:47:48,715 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 16:47:48,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 16:47:48,717 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 16:47:48,718 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 16:47:48,719 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 16:47:48,720 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 16:47:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 16:47:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 16:47:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 16:47:48,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 16:47:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:47:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:47:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:47:49,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:47:49,400 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 16:47:49,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:49 BoogieIcfgContainer [2020-08-22 16:47:49,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:47:49,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:47:49,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:47:49,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:47:49,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:47:47" (1/3) ... [2020-08-22 16:47:49,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaca41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:49, skipping insertion in model container [2020-08-22 16:47:49,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:47:48" (2/3) ... [2020-08-22 16:47:49,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aaca41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:47:49, skipping insertion in model container [2020-08-22 16:47:49,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:47:49" (3/3) ... [2020-08-22 16:47:49,420 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-22 16:47:49,429 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:47:49,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 16:47:49,454 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 16:47:49,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:47:49,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:47:49,481 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:47:49,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:47:49,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:47:49,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:47:49,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:47:49,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:47:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-22 16:47:49,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-22 16:47:49,513 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:49,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:49,516 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:49,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:49,523 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-22 16:47:49,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:49,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437853750] [2020-08-22 16:47:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:49,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437853750] [2020-08-22 16:47:49,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:49,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:49,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288768173] [2020-08-22 16:47:49,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:49,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:49,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:49,917 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-22 16:47:50,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:50,248 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-22 16:47:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:50,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-22 16:47:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:50,269 INFO L225 Difference]: With dead ends: 188 [2020-08-22 16:47:50,269 INFO L226 Difference]: Without dead ends: 100 [2020-08-22 16:47:50,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:50,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-22 16:47:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-22 16:47:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-22 16:47:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-22 16:47:50,366 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-22 16:47:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:50,367 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-22 16:47:50,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-22 16:47:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:50,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:50,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:50,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:47:50,369 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:50,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:50,370 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-22 16:47:50,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:50,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847099669] [2020-08-22 16:47:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:50,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:50,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:50,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847099669] [2020-08-22 16:47:50,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:50,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:50,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865140965] [2020-08-22 16:47:50,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:50,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:50,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:50,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:50,450 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-22 16:47:50,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:50,617 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-22 16:47:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:50,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-22 16:47:50,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:50,619 INFO L225 Difference]: With dead ends: 85 [2020-08-22 16:47:50,620 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 16:47:50,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:50,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 16:47:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-22 16:47:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-22 16:47:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-22 16:47:50,631 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-22 16:47:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:50,632 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-22 16:47:50,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-22 16:47:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:50,633 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:50,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:50,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:47:50,633 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-22 16:47:50,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:50,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382506470] [2020-08-22 16:47:50,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:50,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:50,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382506470] [2020-08-22 16:47:50,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:50,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:50,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210967846] [2020-08-22 16:47:50,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:50,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:50,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:50,747 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-22 16:47:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:51,027 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-22 16:47:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:51,027 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:47:51,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:51,029 INFO L225 Difference]: With dead ends: 140 [2020-08-22 16:47:51,029 INFO L226 Difference]: Without dead ends: 138 [2020-08-22 16:47:51,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-22 16:47:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-22 16:47:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 16:47:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-22 16:47:51,040 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-22 16:47:51,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:51,041 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-22 16:47:51,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-22 16:47:51,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:47:51,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:51,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:51,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:47:51,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:51,043 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-22 16:47:51,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:51,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293902553] [2020-08-22 16:47:51,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:51,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293902553] [2020-08-22 16:47:51,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:51,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:51,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748046518] [2020-08-22 16:47:51,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:51,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:51,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:51,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:51,161 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-22 16:47:51,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:51,349 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-22 16:47:51,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:51,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-22 16:47:51,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:51,351 INFO L225 Difference]: With dead ends: 85 [2020-08-22 16:47:51,351 INFO L226 Difference]: Without dead ends: 83 [2020-08-22 16:47:51,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:51,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-22 16:47:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-22 16:47:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-22 16:47:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-22 16:47:51,360 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-22 16:47:51,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:51,361 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-22 16:47:51,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-22 16:47:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:47:51,362 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:51,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:51,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:47:51,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-22 16:47:51,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:51,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225905892] [2020-08-22 16:47:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:51,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225905892] [2020-08-22 16:47:51,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:51,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:51,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779130708] [2020-08-22 16:47:51,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:51,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:51,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:51,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:51,455 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-22 16:47:51,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:51,614 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-22 16:47:51,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:51,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 16:47:51,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:51,616 INFO L225 Difference]: With dead ends: 83 [2020-08-22 16:47:51,616 INFO L226 Difference]: Without dead ends: 79 [2020-08-22 16:47:51,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-22 16:47:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-22 16:47:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:47:51,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-22 16:47:51,624 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-22 16:47:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:51,625 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-22 16:47:51,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-22 16:47:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:47:51,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:51,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:51,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 16:47:51,626 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:51,627 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-22 16:47:51,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:51,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72806178] [2020-08-22 16:47:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:51,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72806178] [2020-08-22 16:47:51,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:51,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:51,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026564902] [2020-08-22 16:47:51,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:51,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:51,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:51,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:51,699 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-22 16:47:51,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:51,885 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-22 16:47:51,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:51,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-22 16:47:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:51,888 INFO L225 Difference]: With dead ends: 136 [2020-08-22 16:47:51,888 INFO L226 Difference]: Without dead ends: 116 [2020-08-22 16:47:51,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-22 16:47:51,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-22 16:47:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-22 16:47:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-22 16:47:51,898 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-22 16:47:51,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:51,899 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-22 16:47:51,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:51,899 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-22 16:47:51,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 16:47:51,900 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:51,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:51,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 16:47:51,901 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:51,902 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-22 16:47:51,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:51,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392048082] [2020-08-22 16:47:51,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:51,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392048082] [2020-08-22 16:47:51,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:51,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:51,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811255654] [2020-08-22 16:47:51,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:51,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:51,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:51,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:51,954 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-22 16:47:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:52,090 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-22 16:47:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:52,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-22 16:47:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:52,092 INFO L225 Difference]: With dead ends: 141 [2020-08-22 16:47:52,092 INFO L226 Difference]: Without dead ends: 99 [2020-08-22 16:47:52,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:52,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-22 16:47:52,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-22 16:47:52,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 16:47:52,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 16:47:52,101 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-22 16:47:52,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:52,102 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 16:47:52,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:52,102 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 16:47:52,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:47:52,103 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:52,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:52,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 16:47:52,103 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:52,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:52,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-22 16:47:52,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:52,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399908063] [2020-08-22 16:47:52,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:52,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:52,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399908063] [2020-08-22 16:47:52,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:52,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:52,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368149245] [2020-08-22 16:47:52,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:52,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:52,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:52,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:52,178 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-22 16:47:52,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:52,298 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-22 16:47:52,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:52,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 16:47:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:52,300 INFO L225 Difference]: With dead ends: 78 [2020-08-22 16:47:52,300 INFO L226 Difference]: Without dead ends: 76 [2020-08-22 16:47:52,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-22 16:47:52,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-22 16:47:52,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:47:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 16:47:52,316 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-22 16:47:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:52,316 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 16:47:52,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 16:47:52,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:47:52,319 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:52,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:52,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 16:47:52,321 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:52,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:52,322 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-22 16:47:52,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:52,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260506085] [2020-08-22 16:47:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:52,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260506085] [2020-08-22 16:47:52,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:52,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283661612] [2020-08-22 16:47:52,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:52,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:52,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:52,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:52,418 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-22 16:47:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:52,609 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-22 16:47:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:52,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:47:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:52,611 INFO L225 Difference]: With dead ends: 194 [2020-08-22 16:47:52,611 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 16:47:52,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 16:47:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-22 16:47:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-22 16:47:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-22 16:47:52,618 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-22 16:47:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:52,619 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-22 16:47:52,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-22 16:47:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 16:47:52,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:52,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:52,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 16:47:52,620 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:52,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:52,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-22 16:47:52,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:52,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981133371] [2020-08-22 16:47:52,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:52,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981133371] [2020-08-22 16:47:52,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:52,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:52,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474457364] [2020-08-22 16:47:52,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:52,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:52,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:52,696 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-22 16:47:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:52,837 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-22 16:47:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 16:47:52,839 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 16:47:52,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:52,840 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:47:52,840 INFO L226 Difference]: Without dead ends: 77 [2020-08-22 16:47:52,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-22 16:47:52,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-22 16:47:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-22 16:47:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-22 16:47:52,851 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-22 16:47:52,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:52,854 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-22 16:47:52,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-22 16:47:52,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:47:52,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:52,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:52,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 16:47:52,855 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:52,856 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-22 16:47:52,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:52,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671210296] [2020-08-22 16:47:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:52,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671210296] [2020-08-22 16:47:52,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:52,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:52,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268384382] [2020-08-22 16:47:52,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:52,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:52,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:52,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:52,957 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-22 16:47:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:53,247 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-22 16:47:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 16:47:53,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 16:47:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:53,249 INFO L225 Difference]: With dead ends: 182 [2020-08-22 16:47:53,249 INFO L226 Difference]: Without dead ends: 139 [2020-08-22 16:47:53,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:47:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-22 16:47:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-22 16:47:53,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 16:47:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-22 16:47:53,256 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-22 16:47:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:53,257 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-22 16:47:53,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-22 16:47:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:47:53,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:53,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:47:53,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 16:47:53,258 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-22 16:47:53,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:53,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254375512] [2020-08-22 16:47:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:53,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:53,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254375512] [2020-08-22 16:47:53,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:53,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:47:53,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682704993] [2020-08-22 16:47:53,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:47:53,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:53,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:47:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:53,493 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-22 16:47:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:54,183 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-22 16:47:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:47:54,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-22 16:47:54,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:54,188 INFO L225 Difference]: With dead ends: 237 [2020-08-22 16:47:54,189 INFO L226 Difference]: Without dead ends: 235 [2020-08-22 16:47:54,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:47:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-22 16:47:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-22 16:47:54,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-22 16:47:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-22 16:47:54,205 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-22 16:47:54,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:54,208 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-22 16:47:54,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:47:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-22 16:47:54,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:47:54,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:54,214 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:54,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 16:47:54,214 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:54,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:54,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-22 16:47:54,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:54,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460320245] [2020-08-22 16:47:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:54,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460320245] [2020-08-22 16:47:54,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:54,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 16:47:54,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780610390] [2020-08-22 16:47:54,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 16:47:54,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:54,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 16:47:54,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:47:54,313 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-22 16:47:54,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:54,503 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-22 16:47:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:47:54,504 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 16:47:54,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:54,505 INFO L225 Difference]: With dead ends: 145 [2020-08-22 16:47:54,505 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 16:47:54,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 16:47:54,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-22 16:47:54,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 16:47:54,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-22 16:47:54,516 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-22 16:47:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:54,518 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-22 16:47:54,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 16:47:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-22 16:47:54,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 16:47:54,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:54,523 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:54,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 16:47:54,523 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:54,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-22 16:47:54,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910611357] [2020-08-22 16:47:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:54,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:54,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910611357] [2020-08-22 16:47:54,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:54,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879142095] [2020-08-22 16:47:54,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:54,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:54,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:54,585 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-22 16:47:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:54,720 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-22 16:47:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:54,721 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-22 16:47:54,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:54,722 INFO L225 Difference]: With dead ends: 119 [2020-08-22 16:47:54,722 INFO L226 Difference]: Without dead ends: 117 [2020-08-22 16:47:54,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:54,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-22 16:47:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-22 16:47:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-22 16:47:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-22 16:47:54,735 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-22 16:47:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:54,735 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-22 16:47:54,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-22 16:47:54,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 16:47:54,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:54,738 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:54,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-22 16:47:54,738 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:54,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:54,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-22 16:47:54,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:54,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317230847] [2020-08-22 16:47:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:54,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317230847] [2020-08-22 16:47:54,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:54,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 16:47:54,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201730919] [2020-08-22 16:47:54,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:47:54,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:54,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:47:54,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:54,932 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-22 16:47:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:55,565 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-22 16:47:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:47:55,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-22 16:47:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:55,567 INFO L225 Difference]: With dead ends: 240 [2020-08-22 16:47:55,567 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 16:47:55,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:47:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 16:47:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-22 16:47:55,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-22 16:47:55,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-22 16:47:55,578 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-22 16:47:55,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:55,578 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-22 16:47:55,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:47:55,579 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-22 16:47:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:47:55,579 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:55,580 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:55,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-22 16:47:55,580 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-22 16:47:55,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:55,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366031135] [2020-08-22 16:47:55,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:55,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366031135] [2020-08-22 16:47:55,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368628990] [2020-08-22 16:47:55,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:55,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2020-08-22 16:47:55,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:55,822 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-08-22 16:47:55,822 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:55,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-08-22 16:47:55,835 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:55,843 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,843 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2020-08-22 16:47:55,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:55,876 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-08-22 16:47:55,877 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,888 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:55,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:55,893 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-08-22 16:47:55,894 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:55,903 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:55,904 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2020-08-22 16:47:55,991 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-08-22 16:47:55,993 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:56,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:56,004 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:56,004 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2020-08-22 16:47:56,006 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:56,009 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:56,010 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:56,010 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:43, output treesize:7 [2020-08-22 16:47:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:56,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:47:56,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-08-22 16:47:56,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493143655] [2020-08-22 16:47:56,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 16:47:56,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:56,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 16:47:56,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:47:56,019 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 9 states. [2020-08-22 16:47:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:56,408 INFO L93 Difference]: Finished difference Result 208 states and 242 transitions. [2020-08-22 16:47:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 16:47:56,408 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-08-22 16:47:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:56,410 INFO L225 Difference]: With dead ends: 208 [2020-08-22 16:47:56,410 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 16:47:56,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:47:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 16:47:56,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2020-08-22 16:47:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-22 16:47:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-22 16:47:56,429 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-22 16:47:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:56,429 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-22 16:47:56,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 16:47:56,429 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-22 16:47:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:47:56,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:56,431 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:56,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-08-22 16:47:56,645 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-22 16:47:56,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:56,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815177104] [2020-08-22 16:47:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:56,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815177104] [2020-08-22 16:47:56,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:56,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 16:47:56,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430493714] [2020-08-22 16:47:56,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 16:47:56,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:56,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 16:47:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:47:56,726 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-22 16:47:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:57,027 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-22 16:47:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:47:57,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-22 16:47:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:57,029 INFO L225 Difference]: With dead ends: 198 [2020-08-22 16:47:57,029 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 16:47:57,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:47:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 16:47:57,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-22 16:47:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-22 16:47:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-22 16:47:57,046 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-22 16:47:57,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:57,047 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-22 16:47:57,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 16:47:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-22 16:47:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 16:47:57,047 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:57,048 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:57,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-22 16:47:57,048 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:57,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:57,048 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-22 16:47:57,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:57,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513286936] [2020-08-22 16:47:57,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:57,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513286936] [2020-08-22 16:47:57,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:57,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:47:57,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083075410] [2020-08-22 16:47:57,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:47:57,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:57,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:47:57,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:47:57,121 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-22 16:47:57,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:57,318 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-22 16:47:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 16:47:57,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 16:47:57,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:57,320 INFO L225 Difference]: With dead ends: 182 [2020-08-22 16:47:57,320 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 16:47:57,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:47:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 16:47:57,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-22 16:47:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-22 16:47:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-22 16:47:57,337 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-22 16:47:57,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:57,337 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-22 16:47:57,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:47:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-22 16:47:57,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 16:47:57,338 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:57,339 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:57,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-22 16:47:57,339 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:57,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:57,340 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-22 16:47:57,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:57,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123911723] [2020-08-22 16:47:57,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:57,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123911723] [2020-08-22 16:47:57,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928664381] [2020-08-22 16:47:57,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:57,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:47:57,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:57,579 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-08-22 16:47:57,580 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,592 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,597 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-08-22 16:47:57,597 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,602 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,602 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,602 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2020-08-22 16:47:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:57,613 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-08-22 16:47:57,614 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,623 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:57,629 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-08-22 16:47:57,630 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,638 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,638 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,639 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2020-08-22 16:47:57,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:57,677 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2020-08-22 16:47:57,678 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,690 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-08-22 16:47:57,690 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2020-08-22 16:47:57,692 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,695 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:57,696 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:57,696 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:47, output treesize:7 [2020-08-22 16:47:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 16:47:57,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:47:57,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2020-08-22 16:47:57,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806484312] [2020-08-22 16:47:57,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 16:47:57,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:57,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 16:47:57,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 16:47:57,707 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 8 states. [2020-08-22 16:47:58,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:58,088 INFO L93 Difference]: Finished difference Result 248 states and 283 transitions. [2020-08-22 16:47:58,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 16:47:58,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-08-22 16:47:58,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:58,091 INFO L225 Difference]: With dead ends: 248 [2020-08-22 16:47:58,091 INFO L226 Difference]: Without dead ends: 210 [2020-08-22 16:47:58,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-08-22 16:47:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-22 16:47:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-22 16:47:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 16:47:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-22 16:47:58,104 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-22 16:47:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:58,104 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-22 16:47:58,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 16:47:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-22 16:47:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 16:47:58,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:58,105 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:58,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:58,320 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:58,320 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-22 16:47:58,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:58,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090850356] [2020-08-22 16:47:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:58,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:58,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090850356] [2020-08-22 16:47:58,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:47:58,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:47:58,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569032925] [2020-08-22 16:47:58,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:47:58,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:47:58,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:47:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:58,357 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-22 16:47:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:47:58,504 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-22 16:47:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:47:58,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-22 16:47:58,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:47:58,507 INFO L225 Difference]: With dead ends: 354 [2020-08-22 16:47:58,508 INFO L226 Difference]: Without dead ends: 258 [2020-08-22 16:47:58,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:47:58,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-22 16:47:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-22 16:47:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-22 16:47:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-22 16:47:58,521 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-22 16:47:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:47:58,522 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-22 16:47:58,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:47:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-22 16:47:58,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:47:58,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:47:58,523 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:47:58,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-22 16:47:58,523 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:47:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:47:58,524 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-22 16:47:58,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:47:58,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256751729] [2020-08-22 16:47:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:47:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:58,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:47:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:47:58,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256751729] [2020-08-22 16:47:58,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477008424] [2020-08-22 16:47:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:47:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:47:58,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 33 conjunts are in the unsatisfiable core [2020-08-22 16:47:58,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:47:58,913 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-08-22 16:47:58,913 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:58,919 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:58,919 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:58,919 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-08-22 16:47:58,928 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-08-22 16:47:58,928 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:58,936 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:58,940 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-08-22 16:47:58,941 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:58,952 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:58,953 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:47:58,953 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2020-08-22 16:47:59,058 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:59,059 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-08-22 16:47:59,059 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:59,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:59,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:59,092 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2020-08-22 16:47:59,094 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:59,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:59,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:59,119 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2020-08-22 16:47:59,120 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:59,137 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:59,140 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:59,142 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:89, output treesize:50 [2020-08-22 16:47:59,245 INFO L441 ElimStorePlain]: Different costs {6=[|v_#memory_$Pointer$.offset_40|], 12=[|v_#memory_$Pointer$.base_40|]} [2020-08-22 16:47:59,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:59,253 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 40 [2020-08-22 16:47:59,254 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:59,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:47:59,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:47:59,369 INFO L350 Elim1Store]: treesize reduction 46, result has 65.2 percent of original size [2020-08-22 16:47:59,370 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 124 [2020-08-22 16:47:59,374 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[9, 3, 2, 1] term [2020-08-22 16:47:59,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-08-22 16:47:59,376 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:47:59,418 INFO L625 ElimStorePlain]: treesize reduction 64, result has 55.9 percent of original size [2020-08-22 16:47:59,421 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-08-22 16:47:59,421 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:97, output treesize:81 [2020-08-22 16:48:01,676 INFO L441 ElimStorePlain]: Different costs {6=[|#memory_$Pointer$.offset|], 12=[|#memory_$Pointer$.base|]} [2020-08-22 16:48:01,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:01,682 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2020-08-22 16:48:01,684 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:01,698 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:01,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-08-22 16:48:01,757 INFO L350 Elim1Store]: treesize reduction 10, result has 84.1 percent of original size [2020-08-22 16:48:01,757 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 72 [2020-08-22 16:48:01,760 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 5 disjuncts [2020-08-22 16:48:01,761 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-08-22 16:48:01,762 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 3 disjuncts [2020-08-22 16:48:01,762 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-08-22 16:48:01,766 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-08-22 16:48:01,771 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-08-22 16:48:01,773 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-08-22 16:48:01,773 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:88, output treesize:7 [2020-08-22 16:48:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:48:01,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:48:01,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2020-08-22 16:48:01,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367827449] [2020-08-22 16:48:01,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:48:01,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:48:01,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:48:01,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=140, Unknown=1, NotChecked=0, Total=182 [2020-08-22 16:48:01,792 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 14 states. [2020-08-22 16:48:32,021 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-08-22 16:48:36,833 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2020-08-22 16:48:39,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:48:39,582 INFO L93 Difference]: Finished difference Result 521 states and 619 transitions. [2020-08-22 16:48:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 16:48:39,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2020-08-22 16:48:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:48:39,586 INFO L225 Difference]: With dead ends: 521 [2020-08-22 16:48:39,586 INFO L226 Difference]: Without dead ends: 429 [2020-08-22 16:48:39,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=221, Invalid=706, Unknown=3, NotChecked=0, Total=930 [2020-08-22 16:48:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-08-22 16:48:39,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 247. [2020-08-22 16:48:39,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-08-22 16:48:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 297 transitions. [2020-08-22 16:48:39,603 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 297 transitions. Word has length 40 [2020-08-22 16:48:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:48:39,603 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 297 transitions. [2020-08-22 16:48:39,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:48:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 297 transitions. [2020-08-22 16:48:39,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 16:48:39,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:48:39,604 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-22 16:48:39,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:48:39,818 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:48:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:48:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-22 16:48:39,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:48:39,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992015031] [2020-08-22 16:48:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:48:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:48:39,841 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:48:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:48:39,855 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:48:39,890 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:48:39,890 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:48:39,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-22 16:48:39,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:48:39 BoogieIcfgContainer [2020-08-22 16:48:39,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:48:39,990 INFO L168 Benchmark]: Toolchain (without parser) took 52063.61 ms. Allocated memory was 139.5 MB in the beginning and 357.0 MB in the end (delta: 217.6 MB). Free memory was 101.0 MB in the beginning and 263.4 MB in the end (delta: -162.4 MB). Peak memory consumption was 55.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:39,991 INFO L168 Benchmark]: CDTParser took 1.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:48:39,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.46 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 167.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:39,992 INFO L168 Benchmark]: Boogie Preprocessor took 77.46 ms. Allocated memory is still 201.9 MB. Free memory was 167.9 MB in the beginning and 164.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:39,992 INFO L168 Benchmark]: RCFGBuilder took 761.41 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 109.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:48:39,995 INFO L168 Benchmark]: TraceAbstraction took 50576.15 ms. Allocated memory was 201.9 MB in the beginning and 357.0 MB in the end (delta: 155.2 MB). Free memory was 108.4 MB in the beginning and 263.4 MB in the end (delta: -155.0 MB). Peak memory consumption was 184.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:48:40,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.51 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.46 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 100.8 MB in the beginning and 167.9 MB in the end (delta: -67.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.46 ms. Allocated memory is still 201.9 MB. Free memory was 167.9 MB in the beginning and 164.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.41 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 109.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 50576.15 ms. Allocated memory was 201.9 MB in the beginning and 357.0 MB in the end (delta: 155.2 MB). Free memory was 108.4 MB in the beginning and 263.4 MB in the end (delta: -155.0 MB). Peak memory consumption was 184.0 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1012] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND TRUE len == 0 [L1021] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND FALSE !(len == 0) [L1023] len = 2 VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={11:13}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 50.4s, OverallIterations: 22, TraceHistogramMax: 2, AutomataDifference: 43.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1634 SDtfs, 2167 SDslu, 3223 SDs, 0 SdLazy, 3712 SolverSat, 227 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 34.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 21 MinimizatonAttempts, 855 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 635 ConstructedInterpolants, 16 QuantifiedInterpolants, 228642 SizeOfPredicates, 31 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 24 InterpolantComputations, 18 PerfectInterpolantSequences, 10/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...