java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:11:00,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:11:00,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:11:00,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:11:00,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:11:00,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:11:00,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:11:00,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:11:00,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:11:00,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:11:00,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:11:00,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:11:00,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:11:00,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:11:00,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:11:00,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:11:00,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:11:00,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:11:00,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:11:00,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:11:00,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:11:00,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:11:00,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:11:00,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:11:00,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:11:00,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:11:00,760 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:11:00,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:11:00,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:11:00,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:11:00,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:11:00,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:11:00,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:11:00,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:11:00,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:11:00,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:11:00,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:11:00,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:11:00,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:11:00,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:11:00,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:11:00,773 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 [2019-10-14 23:11:00,786 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:11:00,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:11:00,790 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:11:00,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:11:00,791 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:11:00,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:11:00,791 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:11:00,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:11:00,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:11:00,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:11:00,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:11:00,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:11:00,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:11:00,793 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:11:00,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:11:00,793 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:11:00,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:11:00,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:11:00,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:11:00,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:11:00,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:11:00,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:11:00,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:11:00,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:11:00,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:11:00,796 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:11:00,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:11:00,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:11:00,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:11:01,078 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:11:01,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:11:01,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:11:01,098 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:11:01,098 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:11:01,099 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-10-14 23:11:01,185 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512a4dae0/0c664b0f1795479e85acf36e537d38d5/FLAG196859fb7 [2019-10-14 23:11:01,755 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:11:01,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-10-14 23:11:01,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512a4dae0/0c664b0f1795479e85acf36e537d38d5/FLAG196859fb7 [2019-10-14 23:11:02,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/512a4dae0/0c664b0f1795479e85acf36e537d38d5 [2019-10-14 23:11:02,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:11:02,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:11:02,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:11:02,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:11:02,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:11:02,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b11b4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02, skipping insertion in model container [2019-10-14 23:11:02,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:11:02,181 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:11:02,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:11:02,658 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:11:02,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:11:02,775 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:11:02,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02 WrapperNode [2019-10-14 23:11:02,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:11:02,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:11:02,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:11:02,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:11:02,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (1/1) ... [2019-10-14 23:11:02,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:11:02,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:11:02,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:11:02,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:11:02,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (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 [2019-10-14 23:11:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:11:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:11:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:11:02,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:11:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:11:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-10-14 23:11:02,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:11:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:11:02,896 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:11:02,897 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:11:02,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:11:02,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:11:02,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:11:02,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:11:02,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:11:02,903 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:11:02,904 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:11:02,905 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:11:02,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:11:02,907 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:11:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:11:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:11:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:11:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:11:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:11:02,911 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:11:02,912 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:11:02,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:11:02,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:11:02,915 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:11:02,916 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:11:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:11:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:11:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:11:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:11:03,304 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:11:03,491 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:11:03,491 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:11:03,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:11:03 BoogieIcfgContainer [2019-10-14 23:11:03,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:11:03,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:11:03,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:11:03,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:11:03,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:11:02" (1/3) ... [2019-10-14 23:11:03,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779d7e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:11:03, skipping insertion in model container [2019-10-14 23:11:03,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:11:02" (2/3) ... [2019-10-14 23:11:03,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779d7e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:11:03, skipping insertion in model container [2019-10-14 23:11:03,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:11:03" (3/3) ... [2019-10-14 23:11:03,507 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-10-14 23:11:03,518 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:11:03,530 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:11:03,544 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:11:03,571 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:11:03,572 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:11:03,572 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:11:03,581 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:11:03,581 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:11:03,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:11:03,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:11:03,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:11:03,605 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2019-10-14 23:11:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:11:03,613 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:03,614 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:03,616 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1054550836, now seen corresponding path program 1 times [2019-10-14 23:11:03,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:03,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266727375] [2019-10-14 23:11:03,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:03,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:03,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:03,926 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266727375] [2019-10-14 23:11:03,928 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:11:03,928 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:11:03,928 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536658416] [2019-10-14 23:11:03,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:11:03,935 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:03,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:11:03,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:11:03,955 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2019-10-14 23:11:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:04,171 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-10-14 23:11:04,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:11:04,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-14 23:11:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:04,181 INFO L225 Difference]: With dead ends: 53 [2019-10-14 23:11:04,181 INFO L226 Difference]: Without dead ends: 26 [2019-10-14 23:11:04,185 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:11:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-14 23:11:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-14 23:11:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-14 23:11:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-10-14 23:11:04,240 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2019-10-14 23:11:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:04,240 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-10-14 23:11:04,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:11:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-10-14 23:11:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-14 23:11:04,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:04,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:04,243 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:04,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:04,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1615663296, now seen corresponding path program 1 times [2019-10-14 23:11:04,247 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:04,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331745680] [2019-10-14 23:11:04,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:04,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331745680] [2019-10-14 23:11:04,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:11:04,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:11:04,546 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594549318] [2019-10-14 23:11:04,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:11:04,548 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:04,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:11:04,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:11:04,551 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2019-10-14 23:11:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:04,730 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-14 23:11:04,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:11:04,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-10-14 23:11:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:04,732 INFO L225 Difference]: With dead ends: 42 [2019-10-14 23:11:04,732 INFO L226 Difference]: Without dead ends: 29 [2019-10-14 23:11:04,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:11:04,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-14 23:11:04,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-10-14 23:11:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:11:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2019-10-14 23:11:04,742 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2019-10-14 23:11:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:04,742 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2019-10-14 23:11:04,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:11:04,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2019-10-14 23:11:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-14 23:11:04,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:04,743 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:04,744 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1504540904, now seen corresponding path program 1 times [2019-10-14 23:11:04,744 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:04,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684092235] [2019-10-14 23:11:04,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:04,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:04,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684092235] [2019-10-14 23:11:04,890 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265141817] [2019-10-14 23:11:04,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:05,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:11:05,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:05,085 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:11:05,086 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-14 23:11:05,086 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647083754] [2019-10-14 23:11:05,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:11:05,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:05,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:11:05,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:11:05,090 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 9 states. [2019-10-14 23:11:05,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:05,284 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2019-10-14 23:11:05,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:11:05,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-10-14 23:11:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:05,290 INFO L225 Difference]: With dead ends: 45 [2019-10-14 23:11:05,290 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 23:11:05,291 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:11:05,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 23:11:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-14 23:11:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 23:11:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-14 23:11:05,298 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2019-10-14 23:11:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:05,299 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-14 23:11:05,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:11:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-14 23:11:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:11:05,300 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:05,300 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:05,504 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:05,504 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash 469324224, now seen corresponding path program 2 times [2019-10-14 23:11:05,505 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:05,505 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151211578] [2019-10-14 23:11:05,505 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:05,506 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:05,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:05,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151211578] [2019-10-14 23:11:05,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380673264] [2019-10-14 23:11:05,682 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:05,801 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:11:05,801 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:11:05,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:11:05,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:05,834 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:11:05,834 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-10-14 23:11:05,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136596464] [2019-10-14 23:11:05,836 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:11:05,836 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:11:05,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:11:05,838 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 10 states. [2019-10-14 23:11:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:06,016 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2019-10-14 23:11:06,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:11:06,019 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2019-10-14 23:11:06,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:06,021 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:11:06,021 INFO L226 Difference]: Without dead ends: 35 [2019-10-14 23:11:06,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:11:06,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-14 23:11:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-14 23:11:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 23:11:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-10-14 23:11:06,028 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 24 [2019-10-14 23:11:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:06,029 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-10-14 23:11:06,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:11:06,029 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-10-14 23:11:06,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:11:06,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:06,031 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:06,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:06,232 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:06,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:06,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102936, now seen corresponding path program 3 times [2019-10-14 23:11:06,233 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:06,234 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991292163] [2019-10-14 23:11:06,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:06,234 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:06,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:11:06,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991292163] [2019-10-14 23:11:06,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506931976] [2019-10-14 23:11:06,406 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:06,526 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-14 23:11:06,526 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:11:06,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 37 conjunts are in the unsatisfiable core [2019-10-14 23:11:06,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:06,606 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-14 23:11:06,606 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,614 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:06,614 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,615 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2019-10-14 23:11:06,656 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:11:06,657 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-10-14 23:11:06,658 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,665 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:06,666 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,666 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:29, output treesize:11 [2019-10-14 23:11:06,771 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-10-14 23:11:06,772 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,773 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:06,774 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:11:06,774 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-10-14 23:11:06,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:11:06,792 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:11:06,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2019-10-14 23:11:06,793 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251500006] [2019-10-14 23:11:06,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-14 23:11:06,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:11:06,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-14 23:11:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2019-10-14 23:11:06,794 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 17 states. [2019-10-14 23:11:07,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:11:07,437 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2019-10-14 23:11:07,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:11:07,437 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 27 [2019-10-14 23:11:07,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:11:07,438 INFO L225 Difference]: With dead ends: 53 [2019-10-14 23:11:07,438 INFO L226 Difference]: Without dead ends: 40 [2019-10-14 23:11:07,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=792, Unknown=0, NotChecked=0, Total=930 [2019-10-14 23:11:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-14 23:11:07,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2019-10-14 23:11:07,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:11:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2019-10-14 23:11:07,446 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 27 [2019-10-14 23:11:07,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:11:07,446 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2019-10-14 23:11:07,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-14 23:11:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2019-10-14 23:11:07,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 23:11:07,447 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:11:07,448 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:11:07,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:07,653 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:11:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:11:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1506888183, now seen corresponding path program 1 times [2019-10-14 23:11:07,654 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:11:07,654 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178784089] [2019-10-14 23:11:07,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:07,655 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:11:07,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:11:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:11:08,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178784089] [2019-10-14 23:11:08,585 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838995976] [2019-10-14 23:11:08,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:11:08,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 61 conjunts are in the unsatisfiable core [2019-10-14 23:11:08,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:11:08,855 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-14 23:11:08,856 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:08,865 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:08,865 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:11:08,866 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-10-14 23:11:08,961 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-10-14 23:11:08,962 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:08,981 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:08,987 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2019-10-14 23:11:08,988 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:09,017 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,022 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:11:09,038 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,074 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,075 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 41 [2019-10-14 23:11:09,076 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:09,120 INFO L567 ElimStorePlain]: treesize reduction 16, result has 72.4 percent of original size [2019-10-14 23:11:09,121 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:11:09,121 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:76, output treesize:32 [2019-10-14 23:11:09,199 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,200 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2019-10-14 23:11:09,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,204 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:11:09,252 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.2 percent of original size [2019-10-14 23:11:09,272 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,273 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-10-14 23:11:09,274 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:09,325 INFO L567 ElimStorePlain]: treesize reduction 16, result has 80.2 percent of original size [2019-10-14 23:11:09,340 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,341 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-10-14 23:11:09,342 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 23:11:09,380 INFO L567 ElimStorePlain]: treesize reduction 16, result has 75.8 percent of original size [2019-10-14 23:11:09,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,383 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-10-14 23:11:09,383 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:66, output treesize:50 [2019-10-14 23:11:09,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,699 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.offset_18|, |v_#memory_$Pointer$.base_18|, |v_#memory_int_25|]} [2019-10-14 23:11:09,703 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:11:09,732 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,736 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:11:09,764 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,774 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:11:09,775 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2019-10-14 23:11:09,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:11:09,781 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:11:09,782 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 23:11:09,783 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_8]} [2019-10-14 23:11:09,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:11:09,986 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-14 23:11:09,992 INFO L168 Benchmark]: Toolchain (without parser) took 7867.31 ms. Allocated memory was 146.3 MB in the beginning and 283.1 MB in the end (delta: 136.8 MB). Free memory was 101.9 MB in the beginning and 151.2 MB in the end (delta: -49.3 MB). Peak memory consumption was 87.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:11:09,993 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-14 23:11:09,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.11 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 170.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:11:09,994 INFO L168 Benchmark]: Boogie Preprocessor took 61.92 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 167.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:11:09,995 INFO L168 Benchmark]: RCFGBuilder took 655.72 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 124.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2019-10-14 23:11:09,996 INFO L168 Benchmark]: TraceAbstraction took 6493.21 ms. Allocated memory was 204.5 MB in the beginning and 283.1 MB in the end (delta: 78.6 MB). Free memory was 123.0 MB in the beginning and 151.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:11:10,003 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 146.3 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 651.11 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 101.5 MB in the beginning and 170.4 MB in the end (delta: -68.9 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.92 ms. Allocated memory is still 204.5 MB. Free memory was 170.4 MB in the beginning and 167.5 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.72 ms. Allocated memory is still 204.5 MB. Free memory was 167.5 MB in the beginning and 124.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6493.21 ms. Allocated memory was 204.5 MB in the beginning and 283.1 MB in the end (delta: 78.6 MB). Free memory was 123.0 MB in the beginning and 151.2 MB in the end (delta: -28.2 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...