/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:41:44,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:41:44,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:41:44,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:41:44,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:41:44,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:41:44,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:41:44,686 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:41:44,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:41:44,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:41:44,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:41:44,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:41:44,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:41:44,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:41:44,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:41:44,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:41:44,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:41:44,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:41:44,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:41:44,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:41:44,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:41:44,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:41:44,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:41:44,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:41:44,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 20:41:44,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 20:41:44,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 20:41:44,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 20:41:44,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 20:41:44,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 20:41:44,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 20:41:44,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 20:41:44,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 20:41:44,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 20:41:44,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 20:41:44,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 20:41:44,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 20:41:44,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 20:41:44,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:41:44,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:41:44,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:41:44,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:41:44,748 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:41:44,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:41:44,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:41:44,752 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:41:44,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:41:44,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:41:44,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:41:44,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:41:44,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:41:44,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:41:44,755 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:41:44,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:41:44,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:41:44,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:41:44,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:41:44,756 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:41:44,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:41:44,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:41:44,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:41:44,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:41:44,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:41:44,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:41:44,758 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:41:45,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:41:45,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:41:45,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:41:45,285 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:41:45,288 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:41:45,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-21 20:41:45,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3b5eed/e74dcfaef9964f379dcfc5ddc551ffb1/FLAG96faf757c [2021-02-21 20:41:46,338 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:41:46,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-21 20:41:46,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3b5eed/e74dcfaef9964f379dcfc5ddc551ffb1/FLAG96faf757c [2021-02-21 20:41:46,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5e3b5eed/e74dcfaef9964f379dcfc5ddc551ffb1 [2021-02-21 20:41:46,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:41:46,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:41:46,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:46,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:41:46,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:41:46,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:46" (1/1) ... [2021-02-21 20:41:46,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bed1c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:46, skipping insertion in model container [2021-02-21 20:41:46,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:41:46" (1/1) ... [2021-02-21 20:41:46,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:41:46,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:41:47,008 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22384,22397] [2021-02-21 20:41:47,015 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22614,22627] [2021-02-21 20:41:47,021 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22989,23002] [2021-02-21 20:41:47,022 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23053,23066] [2021-02-21 20:41:47,024 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23184,23197] [2021-02-21 20:41:47,025 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23248,23261] [2021-02-21 20:41:47,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:47,042 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:41:47,085 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22384,22397] [2021-02-21 20:41:47,088 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22614,22627] [2021-02-21 20:41:47,094 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[22989,23002] [2021-02-21 20:41:47,095 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23053,23066] [2021-02-21 20:41:47,104 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23184,23197] [2021-02-21 20:41:47,105 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i[23248,23261] [2021-02-21 20:41:47,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:41:47,171 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:41:47,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47 WrapperNode [2021-02-21 20:41:47,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:41:47,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:41:47,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:41:47,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:41:47,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (1/1) ... [2021-02-21 20:41:47,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:41:47,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:41:47,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:41:47,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:41:47,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (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 [2021-02-21 20:41:47,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:41:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:41:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:41:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:41:47,399 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 20:41:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 20:41:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 20:41:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 20:41:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 20:41:47,400 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 20:41:47,401 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 20:41:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 20:41:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 20:41:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 20:41:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 20:41:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 20:41:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 20:41:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 20:41:47,405 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 20:41:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 20:41:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 20:41:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 20:41:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 20:41:47,406 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 20:41:47,407 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 20:41:47,408 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 20:41:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 20:41:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:41:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 20:41:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 20:41:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 20:41:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 20:41:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 20:41:47,412 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 20:41:47,413 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 20:41:47,414 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 20:41:47,415 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 20:41:47,416 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 20:41:47,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 20:41:47,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:41:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:41:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:41:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:41:47,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:41:48,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:41:48,339 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-02-21 20:41:48,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:48 BoogieIcfgContainer [2021-02-21 20:41:48,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:41:48,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:41:48,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:41:48,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:41:48,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:41:46" (1/3) ... [2021-02-21 20:41:48,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559cf08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:48, skipping insertion in model container [2021-02-21 20:41:48,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:41:47" (2/3) ... [2021-02-21 20:41:48,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559cf08c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:41:48, skipping insertion in model container [2021-02-21 20:41:48,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:41:48" (3/3) ... [2021-02-21 20:41:48,352 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2021-02-21 20:41:48,360 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:41:48,366 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-21 20:41:48,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-21 20:41:48,411 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:41:48,412 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:41:48,412 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:41:48,412 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:41:48,412 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:41:48,412 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:41:48,413 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:41:48,413 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:41:48,436 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2021-02-21 20:41:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 20:41:48,446 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:48,447 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] [2021-02-21 20:41:48,448 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash -578909769, now seen corresponding path program 1 times [2021-02-21 20:41:48,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:48,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164675209] [2021-02-21 20:41:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:48,565 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:48,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:48,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:48,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:48,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164675209] [2021-02-21 20:41:48,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:48,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 20:41:48,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943405752] [2021-02-21 20:41:48,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 20:41:48,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:48,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 20:41:48,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 20:41:48,845 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2021-02-21 20:41:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:49,310 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2021-02-21 20:41:49,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 20:41:49,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-21 20:41:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:49,324 INFO L225 Difference]: With dead ends: 287 [2021-02-21 20:41:49,325 INFO L226 Difference]: Without dead ends: 148 [2021-02-21 20:41:49,330 INFO L677 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 [2021-02-21 20:41:49,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-21 20:41:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-21 20:41:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-21 20:41:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2021-02-21 20:41:49,391 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 22 [2021-02-21 20:41:49,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:49,392 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2021-02-21 20:41:49,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 20:41:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2021-02-21 20:41:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 20:41:49,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:49,394 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] [2021-02-21 20:41:49,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:41:49,394 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:49,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:49,395 INFO L82 PathProgramCache]: Analyzing trace with hash 949291738, now seen corresponding path program 1 times [2021-02-21 20:41:49,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:49,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018327486] [2021-02-21 20:41:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:49,402 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:49,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,457 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:41:49,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:49,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:49,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:49,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018327486] [2021-02-21 20:41:49,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:49,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:49,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010139363] [2021-02-21 20:41:49,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:49,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:49,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:49,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:49,503 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 4 states. [2021-02-21 20:41:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:49,778 INFO L93 Difference]: Finished difference Result 299 states and 322 transitions. [2021-02-21 20:41:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:49,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-21 20:41:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:49,781 INFO L225 Difference]: With dead ends: 299 [2021-02-21 20:41:49,781 INFO L226 Difference]: Without dead ends: 169 [2021-02-21 20:41:49,784 INFO L677 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 [2021-02-21 20:41:49,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-21 20:41:49,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-02-21 20:41:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-21 20:41:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-21 20:41:49,809 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 24 [2021-02-21 20:41:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:49,809 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-21 20:41:49,809 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-21 20:41:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 20:41:49,811 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:49,811 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] [2021-02-21 20:41:49,811 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:41:49,812 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:49,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1135487830, now seen corresponding path program 1 times [2021-02-21 20:41:49,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:49,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170683012] [2021-02-21 20:41:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:49,896 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:49,902 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:50,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,044 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:50,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,049 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:50,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:41:50,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:50,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:50,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170683012] [2021-02-21 20:41:50,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:50,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:41:50,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620665478] [2021-02-21 20:41:50,097 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:41:50,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:50,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:41:50,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:41:50,098 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 6 states. [2021-02-21 20:41:50,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:50,558 INFO L93 Difference]: Finished difference Result 266 states and 284 transitions. [2021-02-21 20:41:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:41:50,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-21 20:41:50,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:50,566 INFO L225 Difference]: With dead ends: 266 [2021-02-21 20:41:50,566 INFO L226 Difference]: Without dead ends: 264 [2021-02-21 20:41:50,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-21 20:41:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 162. [2021-02-21 20:41:50,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-21 20:41:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-21 20:41:50,606 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 42 [2021-02-21 20:41:50,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:50,607 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-21 20:41:50,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:41:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-21 20:41:50,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-21 20:41:50,610 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:50,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:50,610 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:41:50,611 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:50,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:50,612 INFO L82 PathProgramCache]: Analyzing trace with hash 632709025, now seen corresponding path program 1 times [2021-02-21 20:41:50,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:50,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244420629] [2021-02-21 20:41:50,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:50,651 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:50,657 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:50,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 20:41:50,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:50,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:50,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:50,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244420629] [2021-02-21 20:41:50,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:50,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:41:50,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445274364] [2021-02-21 20:41:50,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:41:50,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:41:50,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:41:50,815 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 4 states. [2021-02-21 20:41:51,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:51,081 INFO L93 Difference]: Finished difference Result 248 states and 265 transitions. [2021-02-21 20:41:51,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:41:51,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2021-02-21 20:41:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:51,083 INFO L225 Difference]: With dead ends: 248 [2021-02-21 20:41:51,083 INFO L226 Difference]: Without dead ends: 163 [2021-02-21 20:41:51,084 INFO L677 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 [2021-02-21 20:41:51,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-02-21 20:41:51,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-02-21 20:41:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-21 20:41:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2021-02-21 20:41:51,107 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 65 [2021-02-21 20:41:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:51,108 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2021-02-21 20:41:51,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:41:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2021-02-21 20:41:51,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 20:41:51,110 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:51,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:51,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:41:51,111 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash 38611748, now seen corresponding path program 1 times [2021-02-21 20:41:51,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:51,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408612999] [2021-02-21 20:41:51,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:51,150 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:51,155 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:51,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:41:51,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 20:41:51,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:41:51,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:41:51,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 20:41:51,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:41:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:41:51,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:41:51,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:41:51,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:41:51,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408612999] [2021-02-21 20:41:51,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:41:51,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:41:51,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126594694] [2021-02-21 20:41:51,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:41:51,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:41:51,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:41:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:41:51,340 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 8 states. [2021-02-21 20:41:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:41:51,815 INFO L93 Difference]: Finished difference Result 275 states and 293 transitions. [2021-02-21 20:41:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:41:51,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2021-02-21 20:41:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:41:51,817 INFO L225 Difference]: With dead ends: 275 [2021-02-21 20:41:51,818 INFO L226 Difference]: Without dead ends: 189 [2021-02-21 20:41:51,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:41:51,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-02-21 20:41:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2021-02-21 20:41:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-21 20:41:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2021-02-21 20:41:51,841 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 67 [2021-02-21 20:41:51,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:41:51,842 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2021-02-21 20:41:51,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:41:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2021-02-21 20:41:51,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-21 20:41:51,844 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:41:51,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:41:51,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:41:51,845 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:41:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:41:51,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1740228018, now seen corresponding path program 1 times [2021-02-21 20:41:51,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:41:51,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924248408] [2021-02-21 20:41:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:41:51,886 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:41:51,890 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:41:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:51,927 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:41:51,956 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:41:52,003 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:41:52,004 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:41:52,004 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:41:52,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:41:52 BoogieIcfgContainer [2021-02-21 20:41:52,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:41:52,027 INFO L168 Benchmark]: Toolchain (without parser) took 5459.53 ms. Allocated memory was 170.9 MB in the beginning and 209.7 MB in the end (delta: 38.8 MB). Free memory was 144.7 MB in the beginning and 107.6 MB in the end (delta: 37.0 MB). Peak memory consumption was 77.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:52,028 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 170.9 MB. Free memory is still 153.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:41:52,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.90 ms. Allocated memory is still 170.9 MB. Free memory was 143.6 MB in the beginning and 120.3 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:52,029 INFO L168 Benchmark]: Boogie Preprocessor took 85.68 ms. Allocated memory is still 170.9 MB. Free memory was 120.3 MB in the beginning and 117.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:52,030 INFO L168 Benchmark]: RCFGBuilder took 1081.35 ms. Allocated memory is still 170.9 MB. Free memory was 117.2 MB in the beginning and 149.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:52,031 INFO L168 Benchmark]: TraceAbstraction took 3682.19 ms. Allocated memory was 170.9 MB in the beginning and 209.7 MB in the end (delta: 38.8 MB). Free memory was 148.3 MB in the beginning and 107.6 MB in the end (delta: 40.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:41:52,033 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 170.9 MB. Free memory is still 153.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 592.90 ms. Allocated memory is still 170.9 MB. Free memory was 143.6 MB in the beginning and 120.3 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.68 ms. Allocated memory is still 170.9 MB. Free memory was 120.3 MB in the beginning and 117.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1081.35 ms. Allocated memory is still 170.9 MB. Free memory was 117.2 MB in the beginning and 149.0 MB in the end (delta: -31.8 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3682.19 ms. Allocated memory was 170.9 MB in the beginning and 209.7 MB in the end (delta: 38.8 MB). Free memory was 148.3 MB in the beginning and 107.6 MB in the end (delta: 40.7 MB). Peak memory consumption was 80.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L1038] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 171 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 749 SDtfs, 765 SDslu, 842 SDs, 0 SdLazy, 1015 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=5, 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, 5 MinimizatonAttempts, 125 StatesRemovedByMinimization, 3 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...