/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/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:20:17,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:20:17,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:20:17,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:20:17,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:20:17,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:20:17,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:20:17,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:20:17,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:20:17,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:20:17,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:20:17,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:20:17,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:20:17,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:20:17,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:20:17,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:20:17,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:20:17,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:20:17,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:20:17,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:20:17,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:20:17,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:20:17,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:20:17,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:20:17,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 22:20:17,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 22:20:17,529 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 22:20:17,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 22:20:17,531 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 22:20:17,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 22:20:17,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 22:20:17,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 22:20:17,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 22:20:17,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 22:20:17,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 22:20:17,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 22:20:17,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 22:20:17,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 22:20:17,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:20:17,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:20:17,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:20:17,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:20:17,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:20:17,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:20:17,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:20:17,566 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:20:17,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:20:17,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:20:17,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:20:17,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:20:17,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:20:17,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:20:17,568 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:20:17,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:20:17,568 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:20:17,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:20:17,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:20:17,569 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:20:17,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:20:17,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:20:17,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:17,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:20:17,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:20:17,571 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:20:17,571 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 [2020-08-22 22:20:17,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:20:17,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:20:17,900 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:20:17,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:20:17,902 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:20:17,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 22:20:17,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cfa77109/409e107593c7460089c4b7678748183a/FLAG72ca9298a [2020-08-22 22:20:18,472 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:20:18,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-22 22:20:18,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cfa77109/409e107593c7460089c4b7678748183a/FLAG72ca9298a [2020-08-22 22:20:18,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cfa77109/409e107593c7460089c4b7678748183a [2020-08-22 22:20:18,778 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:20:18,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:20:18,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:18,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:20:18,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:20:18,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:18" (1/1) ... [2020-08-22 22:20:18,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564c0634 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:18, skipping insertion in model container [2020-08-22 22:20:18,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:20:18" (1/1) ... [2020-08-22 22:20:18,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:20:18,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:20:19,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:19,478 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:20:19,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:20:19,584 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:20:19,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19 WrapperNode [2020-08-22 22:20:19,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:20:19,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:20:19,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:20:19,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:20:19,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... [2020-08-22 22:20:19,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:20:19,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:20:19,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:20:19,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:20:19,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:20:19,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:20:19,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:20:19,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:20:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 22:20:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 22:20:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 22:20:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 22:20:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 22:20:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 22:20:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 22:20:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 22:20:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 22:20:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 22:20:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 22:20:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 22:20:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 22:20:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 22:20:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 22:20:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 22:20:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 22:20:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 22:20:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 22:20:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 22:20:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 22:20:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 22:20:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 22:20:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 22:20:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 22:20:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 22:20:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 22:20:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 22:20:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 22:20:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 22:20:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 22:20:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 22:20:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 22:20:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 22:20:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 22:20:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 22:20:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 22:20:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 22:20:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 22:20:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 22:20:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 22:20:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 22:20:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 22:20:19,749 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 22:20:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 22:20:19,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 22:20:19,752 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 22:20:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:20:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:20:19,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:20:20,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:20:20,472 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-22 22:20:20,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:20 BoogieIcfgContainer [2020-08-22 22:20:20,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:20:20,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:20:20,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:20:20,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:20:20,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:20:18" (1/3) ... [2020-08-22 22:20:20,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99fea53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:20, skipping insertion in model container [2020-08-22 22:20:20,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:20:19" (2/3) ... [2020-08-22 22:20:20,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@99fea53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:20:20, skipping insertion in model container [2020-08-22 22:20:20,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:20:20" (3/3) ... [2020-08-22 22:20:20,487 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-22 22:20:20,499 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:20:20,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-22 22:20:20,524 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-22 22:20:20,550 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:20:20,550 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:20:20,550 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:20:20,550 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:20:20,551 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:20:20,551 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:20:20,551 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:20:20,551 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:20:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-22 22:20:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-22 22:20:20,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:20,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:20,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:20,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-08-22 22:20:20,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:20,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940772179] [2020-08-22 22:20:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:20,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940772179] [2020-08-22 22:20:20,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:20,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 22:20:20,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262551956] [2020-08-22 22:20:20,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 22:20:20,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:20,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 22:20:20,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:20:20,915 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-08-22 22:20:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:21,434 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-08-22 22:20:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 22:20:21,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-22 22:20:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:21,449 INFO L225 Difference]: With dead ends: 359 [2020-08-22 22:20:21,450 INFO L226 Difference]: Without dead ends: 194 [2020-08-22 22:20:21,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:21,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-08-22 22:20:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-08-22 22:20:21,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-22 22:20:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-08-22 22:20:21,539 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-08-22 22:20:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:21,540 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-08-22 22:20:21,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 22:20:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-08-22 22:20:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 22:20:21,541 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:21,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:21,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:20:21,542 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:21,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-08-22 22:20:21,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:21,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410185388] [2020-08-22 22:20:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:21,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:21,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410185388] [2020-08-22 22:20:21,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:21,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352588637] [2020-08-22 22:20:21,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:21,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:21,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:21,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:21,621 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-08-22 22:20:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:21,951 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-08-22 22:20:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:21,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 22:20:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:21,955 INFO L225 Difference]: With dead ends: 170 [2020-08-22 22:20:21,955 INFO L226 Difference]: Without dead ends: 165 [2020-08-22 22:20:21,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-22 22:20:21,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-08-22 22:20:21,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-08-22 22:20:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-08-22 22:20:21,996 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-08-22 22:20:21,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:21,997 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-08-22 22:20:21,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:21,997 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-08-22 22:20:21,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 22:20:21,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:21,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:22,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:20:22,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:22,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-08-22 22:20:22,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:22,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63243711] [2020-08-22 22:20:22,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:22,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:22,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63243711] [2020-08-22 22:20:22,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:22,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:22,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823332839] [2020-08-22 22:20:22,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:22,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:22,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:22,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:22,168 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-08-22 22:20:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:22,820 INFO L93 Difference]: Finished difference Result 255 states and 270 transitions. [2020-08-22 22:20:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:20:22,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-08-22 22:20:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:22,823 INFO L225 Difference]: With dead ends: 255 [2020-08-22 22:20:22,823 INFO L226 Difference]: Without dead ends: 250 [2020-08-22 22:20:22,824 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 [2020-08-22 22:20:22,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-08-22 22:20:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 159. [2020-08-22 22:20:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-08-22 22:20:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-08-22 22:20:22,846 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-08-22 22:20:22,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:22,846 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-08-22 22:20:22,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:22,847 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-08-22 22:20:22,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-22 22:20:22,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:22,848 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:20:22,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:20:22,849 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:22,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:22,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-08-22 22:20:22,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:22,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961609412] [2020-08-22 22:20:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:22,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:22,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961609412] [2020-08-22 22:20:22,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:22,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 22:20:22,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81480680] [2020-08-22 22:20:22,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 22:20:22,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:22,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 22:20:22,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 22:20:22,947 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-08-22 22:20:23,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:23,405 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-08-22 22:20:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:20:23,406 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-22 22:20:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:23,408 INFO L225 Difference]: With dead ends: 377 [2020-08-22 22:20:23,408 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 22:20:23,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:23,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 22:20:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-08-22 22:20:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-22 22:20:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-08-22 22:20:23,429 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-08-22 22:20:23,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:23,430 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-08-22 22:20:23,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 22:20:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-08-22 22:20:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 22:20:23,431 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:23,432 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] [2020-08-22 22:20:23,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:20:23,432 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:23,433 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-08-22 22:20:23,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:23,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740615806] [2020-08-22 22:20:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:23,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:23,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740615806] [2020-08-22 22:20:23,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:23,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 22:20:23,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542237521] [2020-08-22 22:20:23,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 22:20:23,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:23,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 22:20:23,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 22:20:23,518 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 7 states. [2020-08-22 22:20:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:23,937 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-08-22 22:20:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 22:20:23,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-08-22 22:20:23,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:23,939 INFO L225 Difference]: With dead ends: 270 [2020-08-22 22:20:23,940 INFO L226 Difference]: Without dead ends: 238 [2020-08-22 22:20:23,940 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 [2020-08-22 22:20:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-22 22:20:23,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-08-22 22:20:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-22 22:20:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-08-22 22:20:23,963 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-08-22 22:20:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:23,963 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-08-22 22:20:23,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 22:20:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-08-22 22:20:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 22:20:23,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:23,965 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] [2020-08-22 22:20:23,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:20:23,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:23,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:23,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-08-22 22:20:23,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:23,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484838962] [2020-08-22 22:20:23,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:24,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484838962] [2020-08-22 22:20:24,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:24,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 22:20:24,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975167951] [2020-08-22 22:20:24,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 22:20:24,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:24,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 22:20:24,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 22:20:24,183 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 12 states. [2020-08-22 22:20:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:25,105 INFO L93 Difference]: Finished difference Result 286 states and 302 transitions. [2020-08-22 22:20:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 22:20:25,106 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-08-22 22:20:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:25,108 INFO L225 Difference]: With dead ends: 286 [2020-08-22 22:20:25,108 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 22:20:25,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-08-22 22:20:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 22:20:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 176. [2020-08-22 22:20:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-22 22:20:25,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2020-08-22 22:20:25,140 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 42 [2020-08-22 22:20:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:25,141 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2020-08-22 22:20:25,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 22:20:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2020-08-22 22:20:25,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 22:20:25,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:25,146 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] [2020-08-22 22:20:25,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:20:25,146 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:25,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:25,147 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-08-22 22:20:25,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:25,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640827060] [2020-08-22 22:20:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:25,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:25,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:25,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640827060] [2020-08-22 22:20:25,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:25,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:25,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652509709] [2020-08-22 22:20:25,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:25,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:25,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:25,242 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 4 states. [2020-08-22 22:20:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:25,574 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2020-08-22 22:20:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:25,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-08-22 22:20:25,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:25,577 INFO L225 Difference]: With dead ends: 282 [2020-08-22 22:20:25,585 INFO L226 Difference]: Without dead ends: 215 [2020-08-22 22:20:25,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:25,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-08-22 22:20:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-08-22 22:20:25,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-08-22 22:20:25,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-08-22 22:20:25,633 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 43 [2020-08-22 22:20:25,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:25,633 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-08-22 22:20:25,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-08-22 22:20:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-08-22 22:20:25,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:25,642 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] [2020-08-22 22:20:25,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:20:25,642 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:25,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:25,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-08-22 22:20:25,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:25,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556760529] [2020-08-22 22:20:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:25,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556760529] [2020-08-22 22:20:25,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:25,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:25,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409192059] [2020-08-22 22:20:25,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:25,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:25,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:25,746 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 4 states. [2020-08-22 22:20:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:26,025 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-08-22 22:20:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:26,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-08-22 22:20:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:26,027 INFO L225 Difference]: With dead ends: 179 [2020-08-22 22:20:26,027 INFO L226 Difference]: Without dead ends: 177 [2020-08-22 22:20:26,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-22 22:20:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-08-22 22:20:26,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-08-22 22:20:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2020-08-22 22:20:26,050 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 45 [2020-08-22 22:20:26,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:26,051 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2020-08-22 22:20:26,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2020-08-22 22:20:26,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 22:20:26,052 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:26,052 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] [2020-08-22 22:20:26,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:20:26,053 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:26,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:26,053 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-08-22 22:20:26,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:26,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487902668] [2020-08-22 22:20:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:26,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:26,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487902668] [2020-08-22 22:20:26,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:26,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 22:20:26,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232456277] [2020-08-22 22:20:26,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 22:20:26,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:26,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 22:20:26,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 22:20:26,190 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 9 states. [2020-08-22 22:20:26,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:26,992 INFO L93 Difference]: Finished difference Result 368 states and 393 transitions. [2020-08-22 22:20:26,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 22:20:26,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-08-22 22:20:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:26,995 INFO L225 Difference]: With dead ends: 368 [2020-08-22 22:20:26,995 INFO L226 Difference]: Without dead ends: 300 [2020-08-22 22:20:26,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-08-22 22:20:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-08-22 22:20:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 196. [2020-08-22 22:20:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-08-22 22:20:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2020-08-22 22:20:27,032 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 49 [2020-08-22 22:20:27,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:27,032 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2020-08-22 22:20:27,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 22:20:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2020-08-22 22:20:27,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 22:20:27,034 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:27,034 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] [2020-08-22 22:20:27,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:20:27,034 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:27,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-08-22 22:20:27,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:27,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958472049] [2020-08-22 22:20:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:27,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:27,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:27,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958472049] [2020-08-22 22:20:27,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:27,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 22:20:27,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125738816] [2020-08-22 22:20:27,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 22:20:27,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:27,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 22:20:27,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-08-22 22:20:27,449 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand 14 states. [2020-08-22 22:20:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:29,823 INFO L93 Difference]: Finished difference Result 589 states and 622 transitions. [2020-08-22 22:20:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 22:20:29,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-08-22 22:20:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:29,828 INFO L225 Difference]: With dead ends: 589 [2020-08-22 22:20:29,828 INFO L226 Difference]: Without dead ends: 586 [2020-08-22 22:20:29,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 22:20:29,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-22 22:20:29,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 213. [2020-08-22 22:20:29,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-08-22 22:20:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-08-22 22:20:29,895 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 54 [2020-08-22 22:20:29,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:29,897 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-08-22 22:20:29,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 22:20:29,897 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-08-22 22:20:29,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 22:20:29,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:29,898 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] [2020-08-22 22:20:29,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:20:29,899 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:29,899 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-08-22 22:20:29,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:29,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557468116] [2020-08-22 22:20:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:30,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-22 22:20:30,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557468116] [2020-08-22 22:20:30,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:30,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 22:20:30,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567694759] [2020-08-22 22:20:30,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 22:20:30,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 22:20:30,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 22:20:30,049 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 8 states. [2020-08-22 22:20:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:30,660 INFO L93 Difference]: Finished difference Result 297 states and 316 transitions. [2020-08-22 22:20:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 22:20:30,661 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-22 22:20:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:30,664 INFO L225 Difference]: With dead ends: 297 [2020-08-22 22:20:30,664 INFO L226 Difference]: Without dead ends: 267 [2020-08-22 22:20:30,665 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 [2020-08-22 22:20:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-08-22 22:20:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 248. [2020-08-22 22:20:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-08-22 22:20:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-08-22 22:20:30,707 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 54 [2020-08-22 22:20:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:30,708 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-08-22 22:20:30,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 22:20:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-08-22 22:20:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 22:20:30,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:30,709 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] [2020-08-22 22:20:30,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:20:30,709 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:30,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:30,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-08-22 22:20:30,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:30,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140863486] [2020-08-22 22:20:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:30,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:20:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:20:30,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:20:30,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140863486] [2020-08-22 22:20:30,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:20:30,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:20:30,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742392089] [2020-08-22 22:20:30,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:20:30,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:20:30,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:20:30,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:30,752 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-08-22 22:20:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:20:31,059 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-08-22 22:20:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:20:31,060 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-08-22 22:20:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:20:31,062 INFO L225 Difference]: With dead ends: 254 [2020-08-22 22:20:31,062 INFO L226 Difference]: Without dead ends: 249 [2020-08-22 22:20:31,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:20:31,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-08-22 22:20:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-08-22 22:20:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-08-22 22:20:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-08-22 22:20:31,124 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 56 [2020-08-22 22:20:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:20:31,124 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-08-22 22:20:31,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:20:31,125 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-08-22 22:20:31,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:20:31,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:20:31,126 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] [2020-08-22 22:20:31,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 22:20:31,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:20:31,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:20:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-08-22 22:20:31,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:20:31,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211232136] [2020-08-22 22:20:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:20:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:31,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:20:31,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:20:31,193 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:20:31,193 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:20:31,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-22 22:20:31,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:20:31 BoogieIcfgContainer [2020-08-22 22:20:31,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:20:31,251 INFO L168 Benchmark]: Toolchain (without parser) took 12467.22 ms. Allocated memory was 138.9 MB in the beginning and 353.4 MB in the end (delta: 214.4 MB). Free memory was 101.6 MB in the beginning and 303.4 MB in the end (delta: -201.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:31,252 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-22 22:20:31,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 803.98 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.9 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:31,254 INFO L168 Benchmark]: Boogie Preprocessor took 77.58 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 166.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:31,254 INFO L168 Benchmark]: RCFGBuilder took 813.95 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 103.3 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-08-22 22:20:31,255 INFO L168 Benchmark]: TraceAbstraction took 10766.20 ms. Allocated memory was 202.4 MB in the beginning and 353.4 MB in the end (delta: 151.0 MB). Free memory was 102.3 MB in the beginning and 303.4 MB in the end (delta: -201.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 22:20:31,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 803.98 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 169.9 MB in the end (delta: -68.7 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.58 ms. Allocated memory is still 202.4 MB. Free memory was 169.9 MB in the beginning and 166.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 813.95 ms. Allocated memory is still 202.4 MB. Free memory was 166.8 MB in the beginning and 103.3 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10766.20 ms. Allocated memory was 202.4 MB in the beginning and 353.4 MB in the end (delta: 151.0 MB). Free memory was 102.3 MB in the beginning and 303.4 MB in the end (delta: -201.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L995] 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}] [L995] 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}] [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1000] 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}] [L1011] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1017] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1019] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1020] 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}] [L1020] 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}] [L1021] 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}] [L1023] 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}] [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}] [L1027] 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}] [L1028] 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}] [L1028] 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}] [L1029] 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}] [L1029] COND TRUE !(((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}] [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, 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: 10.6s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1961 SDtfs, 3370 SDslu, 5937 SDs, 0 SdLazy, 4112 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 923 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 148308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 1/1 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...