/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:01,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:01,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:01,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:01,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:01,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:01,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:01,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:01,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:01,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:01,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:01,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:01,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:01,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:01,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:01,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:01,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:01,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:01,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:01,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:01,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:01,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:01,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:01,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:01,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:01,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:01,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:01,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:01,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:01,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:01,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:01,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:01,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:01,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:01,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:01,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:01,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:01,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:01,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:01,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:01,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:01,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:01,579 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:01,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:01,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:01,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:01,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:01,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:01,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:01,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:01,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:01,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:01,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:01,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:01,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:01,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:01,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:01,584 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:01,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:01,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:01,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:01,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:01,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:01,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:01,585 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:01,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:01,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:01,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:01,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:01,916 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:01,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-07-07 13:23:01,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3375c031/d76b420ee34e4e278161a20319c75ace/FLAG740f61ee7 [2020-07-07 13:23:02,599 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:02,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-07-07 13:23:02,615 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3375c031/d76b420ee34e4e278161a20319c75ace/FLAG740f61ee7 [2020-07-07 13:23:02,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3375c031/d76b420ee34e4e278161a20319c75ace [2020-07-07 13:23:02,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:02,884 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:02,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:02,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:02,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:02,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:02" (1/1) ... [2020-07-07 13:23:02,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634dbffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:02, skipping insertion in model container [2020-07-07 13:23:02,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:02" (1/1) ... [2020-07-07 13:23:02,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:02,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:03,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:03,423 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:03,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:03,546 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:03,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03 WrapperNode [2020-07-07 13:23:03,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:03,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:03,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:03,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:03,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... [2020-07-07 13:23:03,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:03,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:03,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:03,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:03,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:23:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:23:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-07-07 13:23:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-07-07 13:23:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-07-07 13:23:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-07-07 13:23:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-07-07 13:23:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-07-07 13:23:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:03,730 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:03,735 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:03,735 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:03,735 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:03,736 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:03,737 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:03,738 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:03,739 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:03,740 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-07-07 13:23:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:23:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:04,709 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:04,709 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-07-07 13:23:04,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:04 BoogieIcfgContainer [2020-07-07 13:23:04,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:04,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:04,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:04,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:04,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:02" (1/3) ... [2020-07-07 13:23:04,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4a2707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:04, skipping insertion in model container [2020-07-07 13:23:04,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:03" (2/3) ... [2020-07-07 13:23:04,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4a2707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:04, skipping insertion in model container [2020-07-07 13:23:04,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:04" (3/3) ... [2020-07-07 13:23:04,725 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-07-07 13:23:04,734 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:04,743 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:04,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:04,782 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:04,782 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:04,782 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:04,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:04,784 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:04,784 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:04,784 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:04,784 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:04,805 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-07-07 13:23:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 13:23:04,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:04,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:04,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:04,826 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-07-07 13:23:04,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:04,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198285235] [2020-07-07 13:23:04,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:05,040 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:05,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198285235] [2020-07-07 13:23:05,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:05,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:23:05,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200516956] [2020-07-07 13:23:05,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:23:05,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:23:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:23:05,072 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-07-07 13:23:05,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:05,491 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-07-07 13:23:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:23:05,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-07 13:23:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:05,509 INFO L225 Difference]: With dead ends: 521 [2020-07-07 13:23:05,509 INFO L226 Difference]: Without dead ends: 252 [2020-07-07 13:23:05,517 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 [2020-07-07 13:23:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-07-07 13:23:05,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-07-07 13:23:05,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-07-07 13:23:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-07-07 13:23:05,594 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-07-07 13:23:05,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:05,595 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-07-07 13:23:05,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:23:05,595 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-07-07 13:23:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 13:23:05,596 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:05,596 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:05,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:05,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:05,597 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-07-07 13:23:05,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:05,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073778763] [2020-07-07 13:23:05,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:05,664 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:05,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073778763] [2020-07-07 13:23:05,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:05,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:23:05,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070874016] [2020-07-07 13:23:05,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:23:05,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:05,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:23:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:23:05,667 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 4 states. [2020-07-07 13:23:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:06,137 INFO L93 Difference]: Finished difference Result 453 states and 502 transitions. [2020-07-07 13:23:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:23:06,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-07 13:23:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:06,141 INFO L225 Difference]: With dead ends: 453 [2020-07-07 13:23:06,141 INFO L226 Difference]: Without dead ends: 253 [2020-07-07 13:23:06,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:23:06,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-07 13:23:06,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-07-07 13:23:06,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-07-07 13:23:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-07-07 13:23:06,169 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 17 [2020-07-07 13:23:06,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:06,169 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-07-07 13:23:06,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:23:06,170 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-07-07 13:23:06,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 13:23:06,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:06,171 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:06,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:06,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:06,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-07-07 13:23:06,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:06,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471846594] [2020-07-07 13:23:06,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:06,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:06,436 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:06,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471846594] [2020-07-07 13:23:06,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:06,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:23:06,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473094533] [2020-07-07 13:23:06,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:23:06,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:06,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:23:06,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:23:06,440 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 8 states. [2020-07-07 13:23:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:07,370 INFO L93 Difference]: Finished difference Result 318 states and 355 transitions. [2020-07-07 13:23:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:23:07,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-07-07 13:23:07,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:07,374 INFO L225 Difference]: With dead ends: 318 [2020-07-07 13:23:07,374 INFO L226 Difference]: Without dead ends: 313 [2020-07-07 13:23:07,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:23:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-07-07 13:23:07,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 231. [2020-07-07 13:23:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-07-07 13:23:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-07-07 13:23:07,411 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-07-07 13:23:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:07,411 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-07-07 13:23:07,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:23:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-07-07 13:23:07,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:23:07,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:07,417 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, 1, 1] [2020-07-07 13:23:07,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:07,417 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:07,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-07-07 13:23:07,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:07,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127856911] [2020-07-07 13:23:07,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:07,589 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:07,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127856911] [2020-07-07 13:23:07,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:07,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:23:07,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910425610] [2020-07-07 13:23:07,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:23:07,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:07,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:23:07,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:07,595 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-07-07 13:23:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:08,274 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-07-07 13:23:08,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:23:08,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-07-07 13:23:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:08,277 INFO L225 Difference]: With dead ends: 248 [2020-07-07 13:23:08,278 INFO L226 Difference]: Without dead ends: 244 [2020-07-07 13:23:08,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:23:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-07-07 13:23:08,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-07-07 13:23:08,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-07-07 13:23:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-07-07 13:23:08,301 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-07-07 13:23:08,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:08,301 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-07-07 13:23:08,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:23:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-07-07 13:23:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:23:08,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:08,303 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, 1, 1] [2020-07-07 13:23:08,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:08,303 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:08,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:08,304 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-07-07 13:23:08,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:08,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456068628] [2020-07-07 13:23:08,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:08,402 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:08,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456068628] [2020-07-07 13:23:08,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:08,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:23:08,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434593772] [2020-07-07 13:23:08,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:23:08,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:08,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:23:08,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:08,405 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-07-07 13:23:09,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:09,106 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-07-07 13:23:09,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:23:09,107 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-07-07 13:23:09,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:09,109 INFO L225 Difference]: With dead ends: 246 [2020-07-07 13:23:09,111 INFO L226 Difference]: Without dead ends: 242 [2020-07-07 13:23:09,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:23:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-07-07 13:23:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-07-07 13:23:09,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-07-07 13:23:09,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-07-07 13:23:09,134 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-07-07 13:23:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:09,137 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-07-07 13:23:09,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:23:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-07-07 13:23:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 13:23:09,143 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:09,143 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, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:09,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:23:09,144 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-07-07 13:23:09,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:09,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559899339] [2020-07-07 13:23:09,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:09,322 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:09,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559899339] [2020-07-07 13:23:09,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:09,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:23:09,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262087377] [2020-07-07 13:23:09,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:23:09,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:09,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:23:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:23:09,326 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-07-07 13:23:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:10,476 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-07-07 13:23:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:23:10,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-07-07 13:23:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:10,479 INFO L225 Difference]: With dead ends: 299 [2020-07-07 13:23:10,479 INFO L226 Difference]: Without dead ends: 295 [2020-07-07 13:23:10,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:23:10,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-07-07 13:23:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-07-07 13:23:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-07-07 13:23:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-07-07 13:23:10,502 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-07-07 13:23:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:10,502 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-07-07 13:23:10,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:23:10,502 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-07-07 13:23:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 13:23:10,503 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:10,503 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, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:10,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:23:10,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:10,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:10,504 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-07-07 13:23:10,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:10,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098110627] [2020-07-07 13:23:10,505 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:10,676 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:10,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098110627] [2020-07-07 13:23:10,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:10,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:23:10,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087612499] [2020-07-07 13:23:10,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:23:10,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:10,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:23:10,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:23:10,678 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 10 states. [2020-07-07 13:23:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:11,734 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-07-07 13:23:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:23:11,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-07-07 13:23:11,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:11,740 INFO L225 Difference]: With dead ends: 297 [2020-07-07 13:23:11,740 INFO L226 Difference]: Without dead ends: 293 [2020-07-07 13:23:11,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-07-07 13:23:11,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-07-07 13:23:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 241. [2020-07-07 13:23:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-07-07 13:23:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 262 transitions. [2020-07-07 13:23:11,764 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 262 transitions. Word has length 46 [2020-07-07 13:23:11,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:11,764 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 262 transitions. [2020-07-07 13:23:11,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:23:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 262 transitions. [2020-07-07 13:23:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 13:23:11,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:11,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:11,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:23:11,769 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:11,769 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-07-07 13:23:11,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:11,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997915002] [2020-07-07 13:23:11,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:23:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:23:11,903 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:11,904 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:23:11,904 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:23:11,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:23:11,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:23:11 BoogieIcfgContainer [2020-07-07 13:23:11,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:23:11,933 INFO L168 Benchmark]: Toolchain (without parser) took 9048.89 ms. Allocated memory was 144.7 MB in the beginning and 326.1 MB in the end (delta: 181.4 MB). Free memory was 101.8 MB in the beginning and 103.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 180.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,934 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,935 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.65 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 166.7 MB in the end (delta: -65.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,936 INFO L168 Benchmark]: Boogie Preprocessor took 112.45 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,937 INFO L168 Benchmark]: RCFGBuilder took 1055.53 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.6 MB in the beginning and 200.5 MB in the end (delta: -37.9 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,938 INFO L168 Benchmark]: TraceAbstraction took 7214.17 ms. Allocated memory was 233.8 MB in the beginning and 326.1 MB in the end (delta: 92.3 MB). Free memory was 200.5 MB in the beginning and 103.2 MB in the end (delta: 97.3 MB). Peak memory consumption was 189.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:11,942 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 659.65 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 101.4 MB in the beginning and 166.7 MB in the end (delta: -65.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.45 ms. Allocated memory is still 201.9 MB. Free memory was 166.7 MB in the beginning and 163.3 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1055.53 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 162.6 MB in the beginning and 200.5 MB in the end (delta: -37.9 MB). Peak memory consumption was 81.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7214.17 ms. Allocated memory was 233.8 MB in the beginning and 326.1 MB in the end (delta: 92.3 MB). Free memory was 200.5 MB in the beginning and 103.2 MB in the end (delta: 97.3 MB). Peak memory consumption was 189.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L643] CALL inspect_before(data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.1s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1648 SDtfs, 1766 SDslu, 2633 SDs, 0 SdLazy, 4338 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 280 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...