/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-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:28:08,581 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:28:08,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:28:08,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:28:08,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:28:08,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:28:08,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:28:08,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:28:08,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:28:08,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:28:08,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:28:08,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:28:08,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:28:08,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:28:08,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:28:08,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:28:08,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:28:08,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:28:08,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:28:08,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:28:08,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:28:08,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:28:08,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:28:08,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:28:08,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:28:08,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:28:08,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:28:08,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:28:08,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:28:08,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:28:08,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:28:08,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:28:08,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:28:08,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:28:08,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:28:08,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:28:08,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:28:08,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:28:08,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:28:08,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:28:08,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:28:08,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:28:08,665 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:28:08,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:28:08,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:28:08,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:28:08,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:28:08,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:28:08,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:28:08,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:28:08,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:28:08,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:28:08,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:28:08,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:28:08,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:28:08,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:28:08,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:28:08,671 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:28:08,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:28:08,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:28:08,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:08,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:28:08,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:28:08,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:28:08,673 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 [2020-07-17 17:28:08,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:28:08,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:28:08,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:28:08,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:28:08,987 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:28:08,987 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-17 17:28:09,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d47e4ba/a94bffae705e48cc9e8b68441b169eb3/FLAG02ff0b603 [2020-07-17 17:28:09,612 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:28:09,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-17 17:28:09,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d47e4ba/a94bffae705e48cc9e8b68441b169eb3/FLAG02ff0b603 [2020-07-17 17:28:09,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29d47e4ba/a94bffae705e48cc9e8b68441b169eb3 [2020-07-17 17:28:09,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:28:09,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:28:09,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:09,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:28:09,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:28:09,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:09" (1/1) ... [2020-07-17 17:28:09,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ae6a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:09, skipping insertion in model container [2020-07-17 17:28:09,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:09" (1/1) ... [2020-07-17 17:28:09,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:28:09,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:28:10,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:10,437 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:28:10,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:10,543 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:28:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10 WrapperNode [2020-07-17 17:28:10,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:10,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:28:10,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:28:10,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:28:10,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... [2020-07-17 17:28:10,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:28:10,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:28:10,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:28:10,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:28:10,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:28:10,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:28:10,681 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 17:28:10,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 17:28:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 17:28:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 17:28:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 17:28:10,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 17:28:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 17:28:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 17:28:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 17:28:10,683 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 17:28:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 17:28:10,684 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 17:28:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 17:28:10,685 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 17:28:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 17:28:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 17:28:10,687 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 17:28:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 17:28:10,688 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 17:28:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 17:28:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 17:28:10,689 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 17:28:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 17:28:10,690 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 17:28:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 17:28:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 17:28:10,691 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 17:28:10,692 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 17:28:10,693 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:28:10,694 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 17:28:10,695 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 17:28:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 17:28:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 17:28:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 17:28:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 17:28:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 17:28:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 17:28:10,700 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 17:28:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 17:28:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 17:28:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 17:28:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 17:28:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 17:28:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 17:28:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 17:28:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 17:28:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:28:10,704 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:28:10,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:28:10,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:28:11,248 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:28:11,249 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-17 17:28:11,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:11 BoogieIcfgContainer [2020-07-17 17:28:11,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:28:11,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:28:11,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:28:11,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:28:11,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:28:09" (1/3) ... [2020-07-17 17:28:11,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e6b830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:11, skipping insertion in model container [2020-07-17 17:28:11,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:10" (2/3) ... [2020-07-17 17:28:11,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e6b830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:11, skipping insertion in model container [2020-07-17 17:28:11,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:11" (3/3) ... [2020-07-17 17:28:11,272 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-07-17 17:28:11,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:28:11,293 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-17 17:28:11,308 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-17 17:28:11,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:28:11,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:28:11,335 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:28:11,335 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:28:11,335 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:28:11,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:28:11,336 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:28:11,336 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:28:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-07-17 17:28:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 17:28:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:11,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:11,385 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -740897811, now seen corresponding path program 1 times [2020-07-17 17:28:11,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:11,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17731882] [2020-07-17 17:28:11,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:11,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17731882] [2020-07-17 17:28:11,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:11,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 17:28:11,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498654802] [2020-07-17 17:28:11,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 17:28:11,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:11,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 17:28:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:28:11,669 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 3 states. [2020-07-17 17:28:11,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:11,922 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2020-07-17 17:28:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 17:28:11,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-17 17:28:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:11,934 INFO L225 Difference]: With dead ends: 179 [2020-07-17 17:28:11,935 INFO L226 Difference]: Without dead ends: 77 [2020-07-17 17:28:11,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 17:28:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-07-17 17:28:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-07-17 17:28:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-07-17 17:28:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2020-07-17 17:28:11,988 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 20 [2020-07-17 17:28:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:11,989 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2020-07-17 17:28:11,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 17:28:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2020-07-17 17:28:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 17:28:11,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:11,990 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] [2020-07-17 17:28:11,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:28:11,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash -2066269805, now seen corresponding path program 1 times [2020-07-17 17:28:11,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:11,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787841915] [2020-07-17 17:28:11,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:12,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787841915] [2020-07-17 17:28:12,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:12,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 17:28:12,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959400610] [2020-07-17 17:28:12,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:28:12,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:28:12,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:28:12,281 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand 10 states. [2020-07-17 17:28:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:12,804 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2020-07-17 17:28:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:28:12,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-17 17:28:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:12,808 INFO L225 Difference]: With dead ends: 155 [2020-07-17 17:28:12,808 INFO L226 Difference]: Without dead ends: 153 [2020-07-17 17:28:12,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-07-17 17:28:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-17 17:28:12,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2020-07-17 17:28:12,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 17:28:12,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2020-07-17 17:28:12,834 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 22 [2020-07-17 17:28:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:12,835 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2020-07-17 17:28:12,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:28:12,835 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2020-07-17 17:28:12,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 17:28:12,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:12,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:12,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:28:12,837 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:12,838 INFO L82 PathProgramCache]: Analyzing trace with hash 807179936, now seen corresponding path program 1 times [2020-07-17 17:28:12,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:12,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948500281] [2020-07-17 17:28:12,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:13,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948500281] [2020-07-17 17:28:13,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:13,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 17:28:13,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156759504] [2020-07-17 17:28:13,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:28:13,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:13,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:28:13,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:28:13,096 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand 12 states. [2020-07-17 17:28:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:13,590 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-07-17 17:28:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 17:28:13,591 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-07-17 17:28:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:13,592 INFO L225 Difference]: With dead ends: 122 [2020-07-17 17:28:13,592 INFO L226 Difference]: Without dead ends: 120 [2020-07-17 17:28:13,593 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 [2020-07-17 17:28:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-07-17 17:28:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2020-07-17 17:28:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-07-17 17:28:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2020-07-17 17:28:13,614 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 31 [2020-07-17 17:28:13,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:13,615 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2020-07-17 17:28:13,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:28:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2020-07-17 17:28:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-17 17:28:13,617 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:13,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:13,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:28:13,617 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:13,618 INFO L82 PathProgramCache]: Analyzing trace with hash -988969633, now seen corresponding path program 1 times [2020-07-17 17:28:13,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:13,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086615671] [2020-07-17 17:28:13,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:13,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086615671] [2020-07-17 17:28:13,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:13,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:13,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384121772] [2020-07-17 17:28:13,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:13,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:13,674 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand 4 states. [2020-07-17 17:28:13,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:13,833 INFO L93 Difference]: Finished difference Result 234 states and 252 transitions. [2020-07-17 17:28:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:13,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-07-17 17:28:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:13,836 INFO L225 Difference]: With dead ends: 234 [2020-07-17 17:28:13,836 INFO L226 Difference]: Without dead ends: 166 [2020-07-17 17:28:13,837 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 [2020-07-17 17:28:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-17 17:28:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 125. [2020-07-17 17:28:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-07-17 17:28:13,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2020-07-17 17:28:13,862 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 36 [2020-07-17 17:28:13,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:13,862 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2020-07-17 17:28:13,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:13,862 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2020-07-17 17:28:13,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-17 17:28:13,864 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:13,864 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] [2020-07-17 17:28:13,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:28:13,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1230029085, now seen corresponding path program 1 times [2020-07-17 17:28:13,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:13,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985893089] [2020-07-17 17:28:13,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:14,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985893089] [2020-07-17 17:28:14,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:14,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 17:28:14,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316264511] [2020-07-17 17:28:14,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 17:28:14,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:14,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 17:28:14,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:28:14,234 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 14 states. [2020-07-17 17:28:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:15,127 INFO L93 Difference]: Finished difference Result 215 states and 228 transitions. [2020-07-17 17:28:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 17:28:15,128 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-07-17 17:28:15,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:15,129 INFO L225 Difference]: With dead ends: 215 [2020-07-17 17:28:15,130 INFO L226 Difference]: Without dead ends: 185 [2020-07-17 17:28:15,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=204, Invalid=666, Unknown=0, NotChecked=0, Total=870 [2020-07-17 17:28:15,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-07-17 17:28:15,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 133. [2020-07-17 17:28:15,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-07-17 17:28:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-07-17 17:28:15,165 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 37 [2020-07-17 17:28:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:15,167 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-07-17 17:28:15,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 17:28:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-07-17 17:28:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 17:28:15,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:15,169 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:15,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:28:15,170 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:15,170 INFO L82 PathProgramCache]: Analyzing trace with hash 626563183, now seen corresponding path program 1 times [2020-07-17 17:28:15,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:15,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917163062] [2020-07-17 17:28:15,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:15,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917163062] [2020-07-17 17:28:15,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:28:15,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-07-17 17:28:15,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469962149] [2020-07-17 17:28:15,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 17:28:15,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:15,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 17:28:15,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:28:15,446 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 15 states. [2020-07-17 17:28:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:16,265 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2020-07-17 17:28:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 17:28:16,266 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-07-17 17:28:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:16,268 INFO L225 Difference]: With dead ends: 227 [2020-07-17 17:28:16,268 INFO L226 Difference]: Without dead ends: 225 [2020-07-17 17:28:16,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-07-17 17:28:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-07-17 17:28:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 145. [2020-07-17 17:28:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-07-17 17:28:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2020-07-17 17:28:16,304 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 40 [2020-07-17 17:28:16,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:16,304 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2020-07-17 17:28:16,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 17:28:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2020-07-17 17:28:16,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 17:28:16,312 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:16,313 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] [2020-07-17 17:28:16,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:28:16,313 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:16,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1667005657, now seen corresponding path program 1 times [2020-07-17 17:28:16,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:16,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [899460485] [2020-07-17 17:28:16,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:16,415 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:28:16,415 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:28:16,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:28:16,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:28:16 BoogieIcfgContainer [2020-07-17 17:28:16,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:28:16,496 INFO L168 Benchmark]: Toolchain (without parser) took 6605.43 ms. Allocated memory was 143.7 MB in the beginning and 294.6 MB in the end (delta: 151.0 MB). Free memory was 100.6 MB in the beginning and 221.8 MB in the end (delta: -121.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:16,497 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 17:28:16,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.55 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 167.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:16,498 INFO L168 Benchmark]: Boogie Preprocessor took 63.01 ms. Allocated memory is still 200.8 MB. Free memory was 167.0 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:16,499 INFO L168 Benchmark]: RCFGBuilder took 651.18 ms. Allocated memory is still 200.8 MB. Free memory was 164.1 MB in the beginning and 114.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:16,500 INFO L168 Benchmark]: TraceAbstraction took 5232.19 ms. Allocated memory was 200.8 MB in the beginning and 294.6 MB in the end (delta: 93.8 MB). Free memory was 114.3 MB in the beginning and 221.8 MB in the end (delta: -107.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:28:16,504 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 143.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.55 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 167.0 MB in the end (delta: -66.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.01 ms. Allocated memory is still 200.8 MB. Free memory was 167.0 MB in the beginning and 164.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.18 ms. Allocated memory is still 200.8 MB. Free memory was 164.1 MB in the beginning and 114.3 MB in the end (delta: 49.8 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5232.19 ms. Allocated memory was 200.8 MB in the beginning and 294.6 MB in the end (delta: 93.8 MB). Free memory was 114.3 MB in the beginning and 221.8 MB in the end (delta: -107.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L987] head->next = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L988] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L990] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L991] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L994] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1016] x->data = state VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1018] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1018] x = head->next VAL [head={-1:0}, head->next={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1019] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1021] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1021] COND TRUE x->data != 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1023] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1] [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.0s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 479 SDtfs, 1426 SDslu, 2136 SDs, 0 SdLazy, 1458 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 44598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 0/2 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...