/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:33,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:33,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:33,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:33,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:33,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:33,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:33,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:33,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:33,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:33,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:33,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:33,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:33,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:33,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:33,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:33,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:33,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:33,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:33,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:33,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:33,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:33,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:33,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:33,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:33,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:33,961 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:33,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:33,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:33,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:33,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:33,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:33,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:33,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:33,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:33,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:33,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:33,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:33,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:33,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:33,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:33,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:13:34,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:34,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:34,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:34,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:34,038 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:34,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:34,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:34,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:34,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:34,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:34,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:34,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:34,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:34,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:34,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:34,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:34,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:34,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:34,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:34,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:34,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:34,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:34,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:34,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:34,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:34,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:34,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:34,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:34,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:34,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:34,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:34,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:34,550 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:34,551 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:34,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-21 16:13:34,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a33779ed/3df4de2ec44a412cb3fed6f20454819b/FLAGb23dcc184 [2021-02-21 16:13:35,399 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:35,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-token-2.i [2021-02-21 16:13:35,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a33779ed/3df4de2ec44a412cb3fed6f20454819b/FLAGb23dcc184 [2021-02-21 16:13:35,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a33779ed/3df4de2ec44a412cb3fed6f20454819b [2021-02-21 16:13:35,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:35,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:35,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:35,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:35,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:35,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:35" (1/1) ... [2021-02-21 16:13:35,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6c6836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:35, skipping insertion in model container [2021-02-21 16:13:35,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:35" (1/1) ... [2021-02-21 16:13:35,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:35,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:36,135 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-token-2.i[22229,22242] [2021-02-21 16:13:36,153 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-token-2.i[22398,22411] [2021-02-21 16:13:36,155 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-token-2.i[22489,22502] [2021-02-21 16:13:36,157 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-token-2.i[22571,22584] [2021-02-21 16:13:36,159 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-token-2.i[22649,22662] [2021-02-21 16:13:36,161 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-token-2.i[22795,22808] [2021-02-21 16:13:36,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:36,183 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:36,252 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-token-2.i[22229,22242] [2021-02-21 16:13:36,256 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-token-2.i[22398,22411] [2021-02-21 16:13:36,261 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-token-2.i[22489,22502] [2021-02-21 16:13:36,265 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-token-2.i[22571,22584] [2021-02-21 16:13:36,267 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-token-2.i[22649,22662] [2021-02-21 16:13:36,271 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-token-2.i[22795,22808] [2021-02-21 16:13:36,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:36,367 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:36,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36 WrapperNode [2021-02-21 16:13:36,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:36,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:36,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:36,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:36,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (1/1) ... [2021-02-21 16:13:36,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:36,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:36,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:36,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:36,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (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 16:13:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:36,640 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:36,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:36,641 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:36,642 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:36,643 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:36,644 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:36,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:36,647 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:36,648 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:36,649 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:36,650 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:36,651 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:36,652 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:36,653 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:36,654 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:37,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:37,421 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-02-21 16:13:37,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:37 BoogieIcfgContainer [2021-02-21 16:13:37,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:37,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:37,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:37,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:37,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:35" (1/3) ... [2021-02-21 16:13:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731fb630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:37, skipping insertion in model container [2021-02-21 16:13:37,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:36" (2/3) ... [2021-02-21 16:13:37,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@731fb630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:37, skipping insertion in model container [2021-02-21 16:13:37,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:37" (3/3) ... [2021-02-21 16:13:37,450 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-token-2.i [2021-02-21 16:13:37,459 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:37,465 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-02-21 16:13:37,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-02-21 16:13:37,543 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:37,543 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:37,544 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:37,544 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:37,544 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:37,544 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:37,544 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:37,544 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:37,569 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2021-02-21 16:13:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:37,577 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:37,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:37,578 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 16:13:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:37,588 INFO L82 PathProgramCache]: Analyzing trace with hash 364969828, now seen corresponding path program 1 times [2021-02-21 16:13:37,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:37,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117478970] [2021-02-21 16:13:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:37,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:37,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:37,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:37,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:37,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:37,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:37,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:37,988 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 16:13:37,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117478970] [2021-02-21 16:13:37,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:37,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:13:37,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074716431] [2021-02-21 16:13:38,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:13:38,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:38,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:13:38,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:38,027 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2021-02-21 16:13:38,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:38,287 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2021-02-21 16:13:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:13:38,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-02-21 16:13:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:38,299 INFO L225 Difference]: With dead ends: 92 [2021-02-21 16:13:38,299 INFO L226 Difference]: Without dead ends: 43 [2021-02-21 16:13:38,304 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 16:13:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-21 16:13:38,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-21 16:13:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 16:13:38,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2021-02-21 16:13:38,346 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2021-02-21 16:13:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:38,346 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2021-02-21 16:13:38,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:13:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2021-02-21 16:13:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:13:38,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:38,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:38,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:38,348 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 16:13:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:38,349 INFO L82 PathProgramCache]: Analyzing trace with hash 364203207, now seen corresponding path program 1 times [2021-02-21 16:13:38,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:38,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938475008] [2021-02-21 16:13:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:38,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 16:13:38,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,460 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:38,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:38,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,528 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 16:13:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938475008] [2021-02-21 16:13:38,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:38,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:38,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345111044] [2021-02-21 16:13:38,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:38,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:38,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:38,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:38,531 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states. [2021-02-21 16:13:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:38,794 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-02-21 16:13:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:13:38,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-02-21 16:13:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:38,797 INFO L225 Difference]: With dead ends: 43 [2021-02-21 16:13:38,797 INFO L226 Difference]: Without dead ends: 41 [2021-02-21 16:13:38,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-02-21 16:13:38,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-02-21 16:13:38,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-02-21 16:13:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-02-21 16:13:38,807 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2021-02-21 16:13:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:38,808 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-02-21 16:13:38,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-02-21 16:13:38,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:13:38,809 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:38,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:38,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:38,809 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 16:13:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:38,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1594645978, now seen corresponding path program 1 times [2021-02-21 16:13:38,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:38,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789919541] [2021-02-21 16:13:38,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:38,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:38,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:13:38,919 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,920 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:38,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:38,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:38,972 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 16:13:38,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789919541] [2021-02-21 16:13:38,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:38,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:38,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200301229] [2021-02-21 16:13:38,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:38,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:38,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:38,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:38,975 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2021-02-21 16:13:39,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:39,199 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2021-02-21 16:13:39,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:39,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2021-02-21 16:13:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:39,202 INFO L225 Difference]: With dead ends: 67 [2021-02-21 16:13:39,202 INFO L226 Difference]: Without dead ends: 65 [2021-02-21 16:13:39,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-21 16:13:39,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2021-02-21 16:13:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-02-21 16:13:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-02-21 16:13:39,212 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2021-02-21 16:13:39,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:39,213 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-02-21 16:13:39,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:39,213 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-02-21 16:13:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 16:13:39,214 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:39,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:39,214 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:39,215 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 16:13:39,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:39,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1812212429, now seen corresponding path program 1 times [2021-02-21 16:13:39,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:39,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004023250] [2021-02-21 16:13:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:39,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:13:39,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:13:39,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:13:39,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:39,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,334 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 16:13:39,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004023250] [2021-02-21 16:13:39,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:39,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:13:39,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608850743] [2021-02-21 16:13:39,335 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:13:39,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:39,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:13:39,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:39,336 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2021-02-21 16:13:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:39,639 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-02-21 16:13:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:13:39,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-02-21 16:13:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:39,644 INFO L225 Difference]: With dead ends: 39 [2021-02-21 16:13:39,644 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 16:13:39,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:13:39,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 16:13:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-21 16:13:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-21 16:13:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-02-21 16:13:39,667 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16 [2021-02-21 16:13:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:39,667 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-02-21 16:13:39,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:13:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-02-21 16:13:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 16:13:39,668 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:39,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:39,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:13:39,669 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 16:13:39,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:39,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1812174693, now seen corresponding path program 1 times [2021-02-21 16:13:39,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:39,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820082483] [2021-02-21 16:13:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:39,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,842 WARN L141 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size [2021-02-21 16:13:39,845 WARN L147 QuantifierPusher]: treesize reduction 25, result has 37.5 percent of original size 15 [2021-02-21 16:13:39,867 WARN L141 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size [2021-02-21 16:13:39,869 WARN L147 QuantifierPusher]: treesize reduction 9, result has 59.1 percent of original size 13 [2021-02-21 16:13:39,887 WARN L141 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-02-21 16:13:39,888 WARN L147 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size 7 [2021-02-21 16:13:39,903 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-21 16:13:39,904 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-21 16:13:39,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:39,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:39,951 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:39,953 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 16:13:39,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820082483] [2021-02-21 16:13:39,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:39,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:13:39,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581939207] [2021-02-21 16:13:39,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:13:39,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:39,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:13:39,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:39,956 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states. [2021-02-21 16:13:40,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:40,280 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2021-02-21 16:13:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:13:40,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2021-02-21 16:13:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:40,282 INFO L225 Difference]: With dead ends: 72 [2021-02-21 16:13:40,282 INFO L226 Difference]: Without dead ends: 48 [2021-02-21 16:13:40,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-21 16:13:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-02-21 16:13:40,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2021-02-21 16:13:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-21 16:13:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-02-21 16:13:40,291 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16 [2021-02-21 16:13:40,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:40,291 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-02-21 16:13:40,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:13:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-02-21 16:13:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 16:13:40,292 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:40,292 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] [2021-02-21 16:13:40,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:13:40,293 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 16:13:40,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:40,294 INFO L82 PathProgramCache]: Analyzing trace with hash -499005925, now seen corresponding path program 1 times [2021-02-21 16:13:40,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:40,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145438576] [2021-02-21 16:13:40,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:40,323 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:40,350 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:40,382 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:40,383 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:40,385 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:13:40,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:40 BoogieIcfgContainer [2021-02-21 16:13:40,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:40,453 INFO L168 Benchmark]: Toolchain (without parser) took 4727.72 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 124.6 MB in the beginning and 146.3 MB in the end (delta: -21.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:40,454 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:40,456 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.65 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 132.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:40,463 INFO L168 Benchmark]: Boogie Preprocessor took 161.38 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 130.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:40,466 INFO L168 Benchmark]: RCFGBuilder took 889.99 ms. Allocated memory is still 151.0 MB. Free memory was 129.8 MB in the beginning and 130.1 MB in the end (delta: -370.4 kB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:40,469 INFO L168 Benchmark]: TraceAbstraction took 3023.31 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 129.6 MB in the beginning and 146.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:40,473 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 151.0 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 635.65 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 132.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 161.38 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 130.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 889.99 ms. Allocated memory is still 151.0 MB. Free memory was 129.8 MB in the beginning and 130.1 MB in the end (delta: -370.4 kB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3023.31 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 129.6 MB in the beginning and 146.3 MB in the end (delta: -16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1037]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] SLL* head = malloc(sizeof(SLL)); [L1005] head->next = ((void*)0) [L1006] head->prev = ((void*)0) [L1007] head->data = 0 [L1009] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1012] COND FALSE !(__VERIFIER_nondet_int()) [L1021] x->data = 1 [L1022] x->next = malloc(sizeof(SLL)) [L1023] EXPR x->next [L1023] x->next->prev = x [L1024] EXPR x->next [L1024] x->next->data = 2 [L1026] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1030] COND FALSE !(1 != x->data) [L1035] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}, x->data=1] [L1035] COND FALSE !(!(1 == x->data)) [L1036] EXPR x->next [L1036] x = x->next [L1037] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}, x->data=2] [L1037] COND TRUE !(2 != x->data) [L1037] reach_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}, x={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 91 SDslu, 226 SDs, 0 SdLazy, 358 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 3853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...