/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:07:35,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:07:35,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:07:35,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:07:35,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:07:35,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:07:35,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:07:35,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:07:35,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:07:35,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:07:35,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:07:35,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:07:35,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:07:35,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:07:35,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:07:35,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:07:35,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:07:35,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:07:35,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:07:35,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:07:35,074 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:07:35,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:07:35,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:07:35,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:07:35,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:07:35,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:07:35,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:07:35,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:07:35,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:07:35,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:07:35,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:07:35,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:07:35,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:07:35,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:07:35,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:07:35,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:07:35,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:07:35,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:07:35,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:07:35,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:07:35,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:07:35,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:07:35,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:07:35,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:07:35,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:07:35,122 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:07:35,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:07:35,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:07:35,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:07:35,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:07:35,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:07:35,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:07:35,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:07:35,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:07:35,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:07:35,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:07:35,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:07:35,125 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:07:35,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:07:35,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:07:35,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:35,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:07:35,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:07:35,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:07:35,128 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-09-04 22:07:35,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:07:35,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:07:35,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:07:35,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:07:35,688 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:07:35,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-04 22:07:35,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338/FLAG82198bbbb [2020-09-04 22:07:36,391 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:07:36,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-04 22:07:36,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338/FLAG82198bbbb [2020-09-04 22:07:36,661 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e2ea3e069/13f1a66fa26242bf826b5fe1a2fc3338 [2020-09-04 22:07:36,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:07:36,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:07:36,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:36,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:07:36,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:07:36,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:36, skipping insertion in model container [2020-09-04 22:07:36,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:36" (1/1) ... [2020-09-04 22:07:36,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:07:36,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:07:37,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:37,354 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:07:37,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:37,468 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:07:37,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37 WrapperNode [2020-09-04 22:07:37,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:37,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:07:37,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:07:37,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:07:37,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,548 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... [2020-09-04 22:07:37,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:07:37,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:07:37,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:07:37,561 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:07:37,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:07:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:07:37,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:07:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:07:37,652 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:07:37,656 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:07:37,657 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:07:37,658 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:07:37,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:07:37,660 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:07:37,661 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:07:37,662 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:07:37,663 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:07:37,664 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:07:37,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:07:38,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:07:38,433 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-04 22:07:38,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:38 BoogieIcfgContainer [2020-09-04 22:07:38,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:07:38,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:07:38,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:07:38,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:07:38,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:36" (1/3) ... [2020-09-04 22:07:38,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:38, skipping insertion in model container [2020-09-04 22:07:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:37" (2/3) ... [2020-09-04 22:07:38,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36cd087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:38, skipping insertion in model container [2020-09-04 22:07:38,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:38" (3/3) ... [2020-09-04 22:07:38,458 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-04 22:07:38,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:07:38,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-04 22:07:38,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-04 22:07:38,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:07:38,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:07:38,543 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:07:38,543 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:07:38,543 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:07:38,543 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:07:38,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:07:38,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:07:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-04 22:07:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-04 22:07:38,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:38,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:38,586 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]=== [2020-09-04 22:07:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-04 22:07:38,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:38,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19712045] [2020-09-04 22:07:38,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:38,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19712045] [2020-09-04 22:07:38,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:38,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 22:07:38,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314014074] [2020-09-04 22:07:38,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 22:07:38,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 22:07:38,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:07:38,906 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-04 22:07:39,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:39,410 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-04 22:07:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 22:07:39,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-04 22:07:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:39,429 INFO L225 Difference]: With dead ends: 360 [2020-09-04 22:07:39,429 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 22:07:39,436 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 [2020-09-04 22:07:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 22:07:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-04 22:07:39,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-04 22:07:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-04 22:07:39,518 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-04 22:07:39,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:39,519 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-04 22:07:39,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 22:07:39,520 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-04 22:07:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-04 22:07:39,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:39,521 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] [2020-09-04 22:07:39,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:07:39,522 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]=== [2020-09-04 22:07:39,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-04 22:07:39,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:39,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134781566] [2020-09-04 22:07:39,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:39,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134781566] [2020-09-04 22:07:39,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:39,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:39,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355604572] [2020-09-04 22:07:39,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:39,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:39,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:39,628 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-09-04 22:07:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:39,947 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-09-04 22:07:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:39,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-04 22:07:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:39,951 INFO L225 Difference]: With dead ends: 170 [2020-09-04 22:07:39,952 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 22:07:39,955 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 [2020-09-04 22:07:39,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 22:07:39,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-04 22:07:39,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-04 22:07:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-04 22:07:40,003 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-09-04 22:07:40,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:40,004 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-04 22:07:40,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:40,004 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-04 22:07:40,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 22:07:40,006 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:40,006 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] [2020-09-04 22:07:40,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:07:40,007 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]=== [2020-09-04 22:07:40,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:40,007 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-04 22:07:40,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:40,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520628347] [2020-09-04 22:07:40,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:40,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520628347] [2020-09-04 22:07:40,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:40,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:40,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301856405] [2020-09-04 22:07:40,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:40,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:40,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:40,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:40,185 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-04 22:07:40,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:40,766 INFO L93 Difference]: Finished difference Result 259 states and 276 transitions. [2020-09-04 22:07:40,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 22:07:40,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-04 22:07:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:40,770 INFO L225 Difference]: With dead ends: 259 [2020-09-04 22:07:40,770 INFO L226 Difference]: Without dead ends: 254 [2020-09-04 22:07:40,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-04 22:07:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-04 22:07:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 159. [2020-09-04 22:07:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-04 22:07:40,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-04 22:07:40,799 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-09-04 22:07:40,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:40,799 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-04 22:07:40,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-04 22:07:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-04 22:07:40,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:40,801 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] [2020-09-04 22:07:40,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:07:40,806 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]=== [2020-09-04 22:07:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-09-04 22:07:40,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:40,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981135748] [2020-09-04 22:07:40,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:40,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:40,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981135748] [2020-09-04 22:07:40,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:40,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:40,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938708902] [2020-09-04 22:07:40,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:40,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:40,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:40,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:40,950 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-09-04 22:07:41,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:41,353 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-09-04 22:07:41,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:07:41,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-04 22:07:41,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:41,356 INFO L225 Difference]: With dead ends: 382 [2020-09-04 22:07:41,356 INFO L226 Difference]: Without dead ends: 253 [2020-09-04 22:07:41,360 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 [2020-09-04 22:07:41,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-04 22:07:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-09-04 22:07:41,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 22:07:41,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-04 22:07:41,411 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-09-04 22:07:41,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:41,412 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-04 22:07:41,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:41,412 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-04 22:07:41,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-04 22:07:41,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:41,414 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] [2020-09-04 22:07:41,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:07:41,416 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]=== [2020-09-04 22:07:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-04 22:07:41,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:41,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727427294] [2020-09-04 22:07:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:41,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727427294] [2020-09-04 22:07:41,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:41,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 22:07:41,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108751463] [2020-09-04 22:07:41,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 22:07:41,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 22:07:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 22:07:41,531 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 7 states. [2020-09-04 22:07:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:41,896 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-09-04 22:07:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:07:41,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-04 22:07:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:41,899 INFO L225 Difference]: With dead ends: 271 [2020-09-04 22:07:41,899 INFO L226 Difference]: Without dead ends: 239 [2020-09-04 22:07:41,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-04 22:07:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-04 22:07:41,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-09-04 22:07:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-04 22:07:41,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-09-04 22:07:41,923 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-09-04 22:07:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:41,923 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-09-04 22:07:41,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 22:07:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-09-04 22:07:41,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 22:07:41,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:41,925 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, 1, 1] [2020-09-04 22:07:41,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:07:41,925 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]=== [2020-09-04 22:07:41,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:41,926 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-04 22:07:41,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:41,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628977793] [2020-09-04 22:07:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:42,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628977793] [2020-09-04 22:07:42,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:42,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 22:07:42,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589222445] [2020-09-04 22:07:42,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 22:07:42,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:42,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 22:07:42,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 22:07:42,016 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-09-04 22:07:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:42,543 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-09-04 22:07:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 22:07:42,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-04 22:07:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:42,546 INFO L225 Difference]: With dead ends: 245 [2020-09-04 22:07:42,546 INFO L226 Difference]: Without dead ends: 241 [2020-09-04 22:07:42,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:07:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-04 22:07:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-04 22:07:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-04 22:07:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-04 22:07:42,577 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-09-04 22:07:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:42,578 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-04 22:07:42,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 22:07:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-04 22:07:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 22:07:42,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:42,583 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, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:42,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:07:42,584 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]=== [2020-09-04 22:07:42,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:42,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-04 22:07:42,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:42,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278093829] [2020-09-04 22:07:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:42,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278093829] [2020-09-04 22:07:42,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:42,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:42,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121828914] [2020-09-04 22:07:42,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:42,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:42,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:42,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:42,689 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-09-04 22:07:42,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:42,931 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-09-04 22:07:42,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:42,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-04 22:07:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:42,934 INFO L225 Difference]: With dead ends: 267 [2020-09-04 22:07:42,936 INFO L226 Difference]: Without dead ends: 196 [2020-09-04 22:07:42,937 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 [2020-09-04 22:07:42,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-04 22:07:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-09-04 22:07:42,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-04 22:07:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-09-04 22:07:42,959 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-09-04 22:07:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:42,961 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-09-04 22:07:42,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-09-04 22:07:42,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-04 22:07:42,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:42,969 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:42,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 22:07:42,969 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]=== [2020-09-04 22:07:42,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:42,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-04 22:07:42,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:42,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800630828] [2020-09-04 22:07:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:43,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800630828] [2020-09-04 22:07:43,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:43,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:43,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857920339] [2020-09-04 22:07:43,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:43,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:43,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:43,040 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-09-04 22:07:43,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:43,265 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-09-04 22:07:43,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:43,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-04 22:07:43,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:43,267 INFO L225 Difference]: With dead ends: 160 [2020-09-04 22:07:43,267 INFO L226 Difference]: Without dead ends: 158 [2020-09-04 22:07:43,267 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 [2020-09-04 22:07:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-04 22:07:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-04 22:07:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 22:07:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-09-04 22:07:43,286 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-09-04 22:07:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:43,287 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-09-04 22:07:43,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-09-04 22:07:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 22:07:43,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:43,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:43,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 22:07:43,291 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]=== [2020-09-04 22:07:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-04 22:07:43,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:43,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216697284] [2020-09-04 22:07:43,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:43,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216697284] [2020-09-04 22:07:43,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:43,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 22:07:43,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101952102] [2020-09-04 22:07:43,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 22:07:43,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:43,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 22:07:43,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 22:07:43,555 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-09-04 22:07:44,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:44,550 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-09-04 22:07:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-04 22:07:44,550 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-09-04 22:07:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:44,553 INFO L225 Difference]: With dead ends: 398 [2020-09-04 22:07:44,553 INFO L226 Difference]: Without dead ends: 326 [2020-09-04 22:07:44,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-04 22:07:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-09-04 22:07:44,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-09-04 22:07:44,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-04 22:07:44,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-09-04 22:07:44,579 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-09-04 22:07:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:44,580 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-09-04 22:07:44,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 22:07:44,580 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-09-04 22:07:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 22:07:44,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:44,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:44,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 22:07:44,582 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]=== [2020-09-04 22:07:44,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-04 22:07:44,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:44,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602789615] [2020-09-04 22:07:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:44,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:44,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:44,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602789615] [2020-09-04 22:07:44,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:44,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:44,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982807496] [2020-09-04 22:07:44,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:44,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:44,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:44,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:44,636 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-09-04 22:07:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:44,861 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-09-04 22:07:44,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:44,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-04 22:07:44,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:44,863 INFO L225 Difference]: With dead ends: 211 [2020-09-04 22:07:44,863 INFO L226 Difference]: Without dead ends: 206 [2020-09-04 22:07:44,864 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 [2020-09-04 22:07:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-04 22:07:44,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-04 22:07:44,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-04 22:07:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-09-04 22:07:44,887 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-09-04 22:07:44,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:44,888 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-09-04 22:07:44,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:44,888 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-09-04 22:07:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 22:07:44,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:44,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:44,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 22:07:44,889 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]=== [2020-09-04 22:07:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-04 22:07:44,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:44,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006398992] [2020-09-04 22:07:44,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:45,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:45,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:45,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006398992] [2020-09-04 22:07:45,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:45,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 22:07:45,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649601303] [2020-09-04 22:07:45,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 22:07:45,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:45,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 22:07:45,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 22:07:45,378 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-09-04 22:07:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:47,752 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-09-04 22:07:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 22:07:47,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-04 22:07:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:47,759 INFO L225 Difference]: With dead ends: 636 [2020-09-04 22:07:47,759 INFO L226 Difference]: Without dead ends: 633 [2020-09-04 22:07:47,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 22:07:47,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-09-04 22:07:47,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-09-04 22:07:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-04 22:07:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-09-04 22:07:47,800 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-09-04 22:07:47,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:47,801 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-09-04 22:07:47,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 22:07:47,801 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-09-04 22:07:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 22:07:47,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:47,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:47,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 22:07:47,803 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]=== [2020-09-04 22:07:47,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:47,803 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-09-04 22:07:47,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:47,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112713338] [2020-09-04 22:07:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:47,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:47,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 22:07:47,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112713338] [2020-09-04 22:07:47,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:47,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:47,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828796330] [2020-09-04 22:07:47,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:47,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:47,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:47,917 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-09-04 22:07:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:48,504 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-09-04 22:07:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 22:07:48,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-04 22:07:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:48,506 INFO L225 Difference]: With dead ends: 321 [2020-09-04 22:07:48,506 INFO L226 Difference]: Without dead ends: 291 [2020-09-04 22:07:48,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-04 22:07:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-09-04 22:07:48,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-09-04 22:07:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 22:07:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-09-04 22:07:48,562 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-09-04 22:07:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:48,562 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-09-04 22:07:48,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-09-04 22:07:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 22:07:48,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:48,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:48,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 22:07:48,564 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]=== [2020-09-04 22:07:48,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-04 22:07:48,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:48,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628503006] [2020-09-04 22:07:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:48,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:48,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628503006] [2020-09-04 22:07:48,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:48,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:48,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917300266] [2020-09-04 22:07:48,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:48,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:48,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:48,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:48,678 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-09-04 22:07:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:49,209 INFO L93 Difference]: Finished difference Result 294 states and 322 transitions. [2020-09-04 22:07:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 22:07:49,210 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-04 22:07:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:49,211 INFO L225 Difference]: With dead ends: 294 [2020-09-04 22:07:49,212 INFO L226 Difference]: Without dead ends: 289 [2020-09-04 22:07:49,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-04 22:07:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-09-04 22:07:49,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268. [2020-09-04 22:07:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-09-04 22:07:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-09-04 22:07:49,249 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-09-04 22:07:49,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:49,250 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-09-04 22:07:49,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:49,250 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-09-04 22:07:49,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 22:07:49,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:49,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:49,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 22:07:49,251 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]=== [2020-09-04 22:07:49,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-04 22:07:49,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:49,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202327987] [2020-09-04 22:07:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:49,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:49,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202327987] [2020-09-04 22:07:49,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:49,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 22:07:49,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387297235] [2020-09-04 22:07:49,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 22:07:49,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:49,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 22:07:49,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-04 22:07:49,581 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states. [2020-09-04 22:07:51,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:51,606 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-09-04 22:07:51,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 22:07:51,607 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-04 22:07:51,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:51,611 INFO L225 Difference]: With dead ends: 722 [2020-09-04 22:07:51,611 INFO L226 Difference]: Without dead ends: 719 [2020-09-04 22:07:51,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 22:07:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-09-04 22:07:51,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-09-04 22:07:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-04 22:07:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-09-04 22:07:51,689 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-09-04 22:07:51,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:51,690 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-09-04 22:07:51,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 22:07:51,690 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-09-04 22:07:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 22:07:51,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:51,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:51,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 22:07:51,691 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]=== [2020-09-04 22:07:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:51,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-09-04 22:07:51,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:51,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685118300] [2020-09-04 22:07:51,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:51,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 22:07:51,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685118300] [2020-09-04 22:07:51,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:51,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:51,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108818521] [2020-09-04 22:07:51,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:51,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:51,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:51,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:51,756 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-09-04 22:07:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:52,065 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-09-04 22:07:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:52,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-09-04 22:07:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:52,068 INFO L225 Difference]: With dead ends: 277 [2020-09-04 22:07:52,068 INFO L226 Difference]: Without dead ends: 275 [2020-09-04 22:07:52,069 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 [2020-09-04 22:07:52,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-09-04 22:07:52,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-09-04 22:07:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-04 22:07:52,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-09-04 22:07:52,126 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-09-04 22:07:52,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:52,126 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-09-04 22:07:52,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:52,127 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-09-04 22:07:52,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 22:07:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:52,128 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:52,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 22:07:52,128 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]=== [2020-09-04 22:07:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-04 22:07:52,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:52,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1228900953] [2020-09-04 22:07:52,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:52,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:52,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1228900953] [2020-09-04 22:07:52,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:52,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-04 22:07:52,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811538860] [2020-09-04 22:07:52,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 22:07:52,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 22:07:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 22:07:52,239 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-09-04 22:07:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:52,821 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-09-04 22:07:52,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 22:07:52,822 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-04 22:07:52,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:52,824 INFO L225 Difference]: With dead ends: 421 [2020-09-04 22:07:52,824 INFO L226 Difference]: Without dead ends: 312 [2020-09-04 22:07:52,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-04 22:07:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-04 22:07:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-09-04 22:07:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-04 22:07:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-09-04 22:07:52,875 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-09-04 22:07:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:52,876 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-09-04 22:07:52,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 22:07:52,876 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-09-04 22:07:52,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-04 22:07:52,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:52,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:52,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 22:07:52,878 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]=== [2020-09-04 22:07:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-09-04 22:07:52,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:52,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88746626] [2020-09-04 22:07:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:53,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88746626] [2020-09-04 22:07:53,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:53,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 22:07:53,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661235838] [2020-09-04 22:07:53,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 22:07:53,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:53,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 22:07:53,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-04 22:07:53,094 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 13 states. [2020-09-04 22:07:54,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:54,346 INFO L93 Difference]: Finished difference Result 564 states and 600 transitions. [2020-09-04 22:07:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 22:07:54,346 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-09-04 22:07:54,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:54,349 INFO L225 Difference]: With dead ends: 564 [2020-09-04 22:07:54,349 INFO L226 Difference]: Without dead ends: 508 [2020-09-04 22:07:54,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-04 22:07:54,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-09-04 22:07:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 279. [2020-09-04 22:07:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-09-04 22:07:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 301 transitions. [2020-09-04 22:07:54,405 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 301 transitions. Word has length 62 [2020-09-04 22:07:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:54,406 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 301 transitions. [2020-09-04 22:07:54,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 22:07:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 301 transitions. [2020-09-04 22:07:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-04 22:07:54,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:54,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:54,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 22:07:54,407 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]=== [2020-09-04 22:07:54,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:54,408 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-04 22:07:54,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:54,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176696612] [2020-09-04 22:07:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:54,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:54,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176696612] [2020-09-04 22:07:54,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:54,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:54,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150678759] [2020-09-04 22:07:54,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:54,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:54,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:54,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:54,463 INFO L87 Difference]: Start difference. First operand 279 states and 301 transitions. Second operand 4 states. [2020-09-04 22:07:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:54,851 INFO L93 Difference]: Finished difference Result 457 states and 503 transitions. [2020-09-04 22:07:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:54,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-04 22:07:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:54,853 INFO L225 Difference]: With dead ends: 457 [2020-09-04 22:07:54,853 INFO L226 Difference]: Without dead ends: 360 [2020-09-04 22:07:54,854 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 [2020-09-04 22:07:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-09-04 22:07:54,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 312. [2020-09-04 22:07:54,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-04 22:07:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 340 transitions. [2020-09-04 22:07:54,930 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 340 transitions. Word has length 64 [2020-09-04 22:07:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:54,930 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 340 transitions. [2020-09-04 22:07:54,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 340 transitions. [2020-09-04 22:07:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-04 22:07:54,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:54,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:54,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 22:07:54,932 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]=== [2020-09-04 22:07:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-04 22:07:54,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:54,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475075421] [2020-09-04 22:07:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:55,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:55,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475075421] [2020-09-04 22:07:55,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-04 22:07:55,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-04 22:07:55,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168255098] [2020-09-04 22:07:55,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 22:07:55,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:55,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 22:07:55,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-04 22:07:55,086 INFO L87 Difference]: Start difference. First operand 312 states and 340 transitions. Second operand 10 states. [2020-09-04 22:07:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:56,055 INFO L93 Difference]: Finished difference Result 499 states and 541 transitions. [2020-09-04 22:07:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 22:07:56,056 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-04 22:07:56,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:56,060 INFO L225 Difference]: With dead ends: 499 [2020-09-04 22:07:56,060 INFO L226 Difference]: Without dead ends: 439 [2020-09-04 22:07:56,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-04 22:07:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-04 22:07:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 343. [2020-09-04 22:07:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-09-04 22:07:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 382 transitions. [2020-09-04 22:07:56,214 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 382 transitions. Word has length 67 [2020-09-04 22:07:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:56,214 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 382 transitions. [2020-09-04 22:07:56,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 22:07:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 382 transitions. [2020-09-04 22:07:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-04 22:07:56,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:56,217 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:56,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 22:07:56,218 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]=== [2020-09-04 22:07:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:56,218 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-04 22:07:56,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:56,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279829187] [2020-09-04 22:07:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:56,244 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:56,267 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:56,322 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:07:56,323 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:07:56,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 22:07:56,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:56 BoogieIcfgContainer [2020-09-04 22:07:56,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:07:56,425 INFO L168 Benchmark]: Toolchain (without parser) took 19742.28 ms. Allocated memory was 136.3 MB in the beginning and 478.7 MB in the end (delta: 342.4 MB). Free memory was 99.6 MB in the beginning and 100.4 MB in the end (delta: -871.7 kB). Peak memory consumption was 341.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:56,429 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:07:56,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.01 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:56,431 INFO L168 Benchmark]: Boogie Preprocessor took 90.28 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 164.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:56,434 INFO L168 Benchmark]: RCFGBuilder took 885.10 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 101.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:56,435 INFO L168 Benchmark]: TraceAbstraction took 17969.56 ms. Allocated memory was 200.8 MB in the beginning and 478.7 MB in the end (delta: 277.9 MB). Free memory was 100.9 MB in the beginning and 100.4 MB in the end (delta: 489.0 kB). Peak memory consumption was 278.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:56,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 136.3 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.01 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 99.3 MB in the beginning and 168.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.28 ms. Allocated memory is still 200.8 MB. Free memory was 168.1 MB in the beginning and 164.4 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 885.10 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 101.6 MB in the end (delta: 62.8 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17969.56 ms. Allocated memory was 200.8 MB in the beginning and 478.7 MB in the end (delta: 277.9 MB). Free memory was 100.9 MB in the beginning and 100.4 MB in the end (delta: 489.0 kB). Peak memory consumption was 278.4 MB. 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)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [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()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L993] COND FALSE !(!(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))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L998] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1008] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1009] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1012] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1014] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1016] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1017] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1017] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1020] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1021] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1025] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1026] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1026] COND FALSE !(!(((void*)0) == inner->next)) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] inner = inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1028] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1029] EXPR inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1029] inner = inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1020] COND FALSE !(len == 0) VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1023] len = 2 VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1025] COND TRUE !(((void*)0) == inner->inner) VAL [end={-1:0}, inner={10:3}, inner->inner={11:12}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1025] __VERIFIER_error() VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3219 SDtfs, 6553 SDslu, 10820 SDs, 0 SdLazy, 7106 SolverSat, 245 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 501 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 1848 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 860 ConstructedInterpolants, 0 QuantifiedInterpolants, 314476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 13/16 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! Received shutdown request...