/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-36cd7be [2021-02-23 18:09:33,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:09:33,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:09:33,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:09:33,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:09:33,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:09:33,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:09:33,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:09:33,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:09:33,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:09:33,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:09:33,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:09:33,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:09:33,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:09:33,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:09:33,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:09:33,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:09:33,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:09:33,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:09:33,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:09:33,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:09:33,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:09:33,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:09:33,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:09:33,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:09:33,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:09:33,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:09:33,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:09:33,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:09:33,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:09:33,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:09:33,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:09:33,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:09:33,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:09:33,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:09:33,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:09:33,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:09:33,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:09:33,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:09:33,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:09:33,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:09:33,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:09:33,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:09:33,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:09:33,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:09:33,618 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:09:33,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:09:33,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:09:33,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:09:33,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:09:33,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:09:33,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:09:33,620 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:09:33,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:09:33,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:09:33,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:09:33,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:09:33,621 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:09:33,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:09:33,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:09:33,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:09:33,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:09:33,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:09:33,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:09:33,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:09:34,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:09:34,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:09:34,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:09:34,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:09:34,080 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:09:34,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-23 18:09:34,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9149f54/87c57c5b1caa4246acd975f8e68bff66/FLAGe619088d9 [2021-02-23 18:09:34,981 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:09:34,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2021-02-23 18:09:35,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9149f54/87c57c5b1caa4246acd975f8e68bff66/FLAGe619088d9 [2021-02-23 18:09:35,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a9149f54/87c57c5b1caa4246acd975f8e68bff66 [2021-02-23 18:09:35,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:09:35,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:09:35,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:35,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:09:35,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:09:35,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11868e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35, skipping insertion in model container [2021-02-23 18:09:35,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:09:35,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:09:35,615 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] [2021-02-23 18:09:35,622 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] [2021-02-23 18:09:35,627 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] [2021-02-23 18:09:35,628 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] [2021-02-23 18:09:35,630 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] [2021-02-23 18:09:35,631 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] [2021-02-23 18:09:35,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:35,647 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:09:35,687 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] [2021-02-23 18:09:35,689 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] [2021-02-23 18:09:35,694 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] [2021-02-23 18:09:35,695 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] [2021-02-23 18:09:35,697 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] [2021-02-23 18:09:35,698 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] [2021-02-23 18:09:35,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:09:35,755 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:09:35,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35 WrapperNode [2021-02-23 18:09:35,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:09:35,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:09:35,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:09:35,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:09:35,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (1/1) ... [2021-02-23 18:09:35,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:09:35,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:09:35,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:09:35,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:09:35,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (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 [2021-02-23 18:09:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:09:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:09:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:09:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:09:35,947 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:09:35,948 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:09:35,949 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:09:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:09:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:09:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:09:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:09:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:09:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:09:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:09:35,957 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:09:35,958 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:09:35,959 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:09:35,960 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:09:35,961 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:09:35,962 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:09:35,963 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:09:35,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:09:35,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:09:36,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:09:36,675 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-02-23 18:09:36,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:36 BoogieIcfgContainer [2021-02-23 18:09:36,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:09:36,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:09:36,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:09:36,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:09:36,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:09:35" (1/3) ... [2021-02-23 18:09:36,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebdce08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:36, skipping insertion in model container [2021-02-23 18:09:36,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:09:35" (2/3) ... [2021-02-23 18:09:36,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebdce08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:09:36, skipping insertion in model container [2021-02-23 18:09:36,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:09:36" (3/3) ... [2021-02-23 18:09:36,690 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2021-02-23 18:09:36,698 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:09:36,705 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-23 18:09:36,729 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-23 18:09:36,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:09:36,759 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:09:36,759 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:09:36,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:09:36,760 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:09:36,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:09:36,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:09:36,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:09:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2021-02-23 18:09:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 18:09:36,794 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:36,795 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] [2021-02-23 18:09:36,796 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:36,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:36,803 INFO L82 PathProgramCache]: Analyzing trace with hash -578909769, now seen corresponding path program 1 times [2021-02-23 18:09:36,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:36,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231981355] [2021-02-23 18:09:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:36,912 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:37,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:37,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:37,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231981355] [2021-02-23 18:09:37,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:37,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:09:37,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909578746] [2021-02-23 18:09:37,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:09:37,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:37,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:09:37,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:09:37,118 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2021-02-23 18:09:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:37,520 INFO L93 Difference]: Finished difference Result 287 states and 353 transitions. [2021-02-23 18:09:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:09:37,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-23 18:09:37,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:37,534 INFO L225 Difference]: With dead ends: 287 [2021-02-23 18:09:37,535 INFO L226 Difference]: Without dead ends: 148 [2021-02-23 18:09:37,540 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 [2021-02-23 18:09:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-02-23 18:09:37,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-02-23 18:09:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2021-02-23 18:09:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2021-02-23 18:09:37,604 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 22 [2021-02-23 18:09:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:37,604 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2021-02-23 18:09:37,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:09:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2021-02-23 18:09:37,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 18:09:37,606 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:37,606 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] [2021-02-23 18:09:37,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:09:37,607 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:37,608 INFO L82 PathProgramCache]: Analyzing trace with hash 949291738, now seen corresponding path program 1 times [2021-02-23 18:09:37,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:37,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935602710] [2021-02-23 18:09:37,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:37,614 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:37,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,676 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:09:37,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:37,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:37,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:37,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:37,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935602710] [2021-02-23 18:09:37,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:37,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:37,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94303357] [2021-02-23 18:09:37,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:37,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:37,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:37,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:37,719 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 4 states. [2021-02-23 18:09:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:38,086 INFO L93 Difference]: Finished difference Result 299 states and 322 transitions. [2021-02-23 18:09:38,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:38,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-23 18:09:38,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:38,089 INFO L225 Difference]: With dead ends: 299 [2021-02-23 18:09:38,089 INFO L226 Difference]: Without dead ends: 169 [2021-02-23 18:09:38,091 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 [2021-02-23 18:09:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-02-23 18:09:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2021-02-23 18:09:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2021-02-23 18:09:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2021-02-23 18:09:38,116 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 24 [2021-02-23 18:09:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:38,117 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2021-02-23 18:09:38,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2021-02-23 18:09:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:09:38,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:38,119 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] [2021-02-23 18:09:38,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:09:38,120 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1135487830, now seen corresponding path program 1 times [2021-02-23 18:09:38,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:38,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022579554] [2021-02-23 18:09:38,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:38,206 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:38,211 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:38,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,367 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:38,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:38,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:38,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:09:38,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:38,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:38,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:38,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:38,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022579554] [2021-02-23 18:09:38,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:38,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:09:38,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975209691] [2021-02-23 18:09:38,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:09:38,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:38,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:09:38,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:09:38,473 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 6 states. [2021-02-23 18:09:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:38,953 INFO L93 Difference]: Finished difference Result 266 states and 284 transitions. [2021-02-23 18:09:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:09:38,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2021-02-23 18:09:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:38,957 INFO L225 Difference]: With dead ends: 266 [2021-02-23 18:09:38,957 INFO L226 Difference]: Without dead ends: 264 [2021-02-23 18:09:38,958 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 [2021-02-23 18:09:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-02-23 18:09:38,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 162. [2021-02-23 18:09:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2021-02-23 18:09:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 173 transitions. [2021-02-23 18:09:38,985 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 173 transitions. Word has length 42 [2021-02-23 18:09:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:38,985 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 173 transitions. [2021-02-23 18:09:38,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:09:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 173 transitions. [2021-02-23 18:09:38,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-23 18:09:38,988 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:38,988 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] [2021-02-23 18:09:38,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:09:38,988 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:38,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:38,989 INFO L82 PathProgramCache]: Analyzing trace with hash 632709025, now seen corresponding path program 1 times [2021-02-23 18:09:38,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:38,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390626593] [2021-02-23 18:09:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:39,033 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:39,038 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:39,103 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:09:39,109 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:39,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:39,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390626593] [2021-02-23 18:09:39,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:39,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:09:39,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776232198] [2021-02-23 18:09:39,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:09:39,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:39,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:09:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:09:39,178 INFO L87 Difference]: Start difference. First operand 162 states and 173 transitions. Second operand 4 states. [2021-02-23 18:09:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:39,443 INFO L93 Difference]: Finished difference Result 248 states and 265 transitions. [2021-02-23 18:09:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 18:09:39,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2021-02-23 18:09:39,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:39,446 INFO L225 Difference]: With dead ends: 248 [2021-02-23 18:09:39,446 INFO L226 Difference]: Without dead ends: 163 [2021-02-23 18:09:39,447 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 [2021-02-23 18:09:39,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-02-23 18:09:39,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-02-23 18:09:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-02-23 18:09:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2021-02-23 18:09:39,467 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 65 [2021-02-23 18:09:39,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:39,468 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2021-02-23 18:09:39,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:09:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2021-02-23 18:09:39,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-23 18:09:39,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:39,470 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] [2021-02-23 18:09:39,470 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:09:39,471 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:39,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:39,471 INFO L82 PathProgramCache]: Analyzing trace with hash 38611748, now seen corresponding path program 1 times [2021-02-23 18:09:39,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:39,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284395903] [2021-02-23 18:09:39,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:39,508 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:39,512 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:39,567 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,568 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:39,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-23 18:09:39,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 18:09:39,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:09:39,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 18:09:39,632 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,633 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:09:39,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:09:39,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:09:39,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:09:39,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:09:39,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284395903] [2021-02-23 18:09:39,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:09:39,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:09:39,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691594723] [2021-02-23 18:09:39,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:09:39,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:09:39,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:09:39,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:09:39,678 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand 8 states. [2021-02-23 18:09:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:09:40,168 INFO L93 Difference]: Finished difference Result 275 states and 293 transitions. [2021-02-23 18:09:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:09:40,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2021-02-23 18:09:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:09:40,171 INFO L225 Difference]: With dead ends: 275 [2021-02-23 18:09:40,171 INFO L226 Difference]: Without dead ends: 189 [2021-02-23 18:09:40,172 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 [2021-02-23 18:09:40,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-02-23 18:09:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2021-02-23 18:09:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2021-02-23 18:09:40,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2021-02-23 18:09:40,194 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 67 [2021-02-23 18:09:40,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:09:40,194 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2021-02-23 18:09:40,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:09:40,195 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2021-02-23 18:09:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-23 18:09:40,196 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:09:40,197 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] [2021-02-23 18:09:40,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:09:40,197 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:09:40,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:09:40,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1740228018, now seen corresponding path program 1 times [2021-02-23 18:09:40,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:09:40,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924391388] [2021-02-23 18:09:40,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:09:40,241 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:09:40,245 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:09:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:40,281 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:09:40,307 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:09:40,356 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:09:40,356 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:09:40,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:09:40,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:09:40 BoogieIcfgContainer [2021-02-23 18:09:40,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:09:40,380 INFO L168 Benchmark]: Toolchain (without parser) took 5169.60 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 130.9 MB in the beginning and 151.9 MB in the end (delta: -21.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:40,381 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:09:40,381 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.22 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 106.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:40,382 INFO L168 Benchmark]: Boogie Preprocessor took 79.85 ms. Allocated memory is still 155.2 MB. Free memory was 106.5 MB in the beginning and 103.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:40,383 INFO L168 Benchmark]: RCFGBuilder took 839.89 ms. Allocated memory is still 155.2 MB. Free memory was 103.3 MB in the beginning and 95.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:40,384 INFO L168 Benchmark]: TraceAbstraction took 3698.47 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 95.3 MB in the beginning and 151.9 MB in the end (delta: -56.6 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:09:40,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 155.2 MB. Free memory is still 129.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 533.22 ms. Allocated memory is still 155.2 MB. Free memory was 129.8 MB in the beginning and 106.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.85 ms. Allocated memory is still 155.2 MB. Free memory was 106.5 MB in the beginning and 103.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 839.89 ms. Allocated memory is still 155.2 MB. Free memory was 103.3 MB in the beginning and 95.8 MB in the end (delta: 7.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3698.47 ms. Allocated memory was 155.2 MB in the beginning and 217.1 MB in the end (delta: 61.9 MB). Free memory was 95.3 MB in the beginning and 151.9 MB in the end (delta: -56.6 MB). Peak memory consumption was 5.2 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: 3.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 749 SDtfs, 775 SDslu, 836 SDs, 0 SdLazy, 1015 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s 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...