/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/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:28:20,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:28:20,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:28:20,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:28:20,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:28:20,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:28:20,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:28:20,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:28:20,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:28:20,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:28:20,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:28:20,834 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:28:20,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:28:20,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:28:20,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:28:20,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:28:20,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:28:20,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:28:20,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:28:20,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:28:20,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:28:20,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:28:20,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:28:20,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:28:20,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:28:20,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:28:20,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:28:20,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:28:20,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:28:20,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:28:20,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:28:20,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:28:20,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:28:20,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:28:20,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:28:20,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:28:20,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:28:20,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:28:20,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:28:20,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:28:20,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:28:20,893 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 [2020-11-06 22:28:20,946 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:28:20,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:28:20,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:28:20,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:28:20,950 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:28:20,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:28:20,950 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:28:20,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:28:20,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:28:20,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:28:20,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:28:20,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:28:20,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:28:20,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:28:20,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:28:20,953 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:28:20,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:28:20,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:28:20,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:28:20,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:28:20,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:28:20,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:28:20,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:28:20,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:28:20,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:28:20,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:28:20,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:28:20,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:28:20,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:28:20,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:28:21,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:28:21,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:28:21,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:28:21,378 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:28:21,379 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:28:21,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-11-06 22:28:21,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064dd5097/8d95479fb839472c9118c068e51dfc1c/FLAG18c116d28 [2020-11-06 22:28:22,161 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:28:22,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-11-06 22:28:22,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064dd5097/8d95479fb839472c9118c068e51dfc1c/FLAG18c116d28 [2020-11-06 22:28:22,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/064dd5097/8d95479fb839472c9118c068e51dfc1c [2020-11-06 22:28:22,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:28:22,419 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:28:22,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:22,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:28:22,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:28:22,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:22,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b27536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22, skipping insertion in model container [2020-11-06 22:28:22,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:22,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:28:22,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:28:22,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:22,806 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:28:22,896 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:22,991 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:28:22,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22 WrapperNode [2020-11-06 22:28:22,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:22,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:28:22,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:28:22,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:28:23,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... [2020-11-06 22:28:23,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:28:23,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:28:23,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:28:23,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:28:23,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:28:23,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:28:23,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:28:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:28:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-06 22:28:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-11-06 22:28:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-11-06 22:28:23,140 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-11-06 22:28:23,141 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-11-06 22:28:23,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:28:23,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:28:23,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:28:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:28:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:28:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-06 22:28:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-11-06 22:28:23,142 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-11-06 22:28:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-11-06 22:28:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-11-06 22:28:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-11-06 22:28:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-11-06 22:28:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-11-06 22:28:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-11-06 22:28:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-11-06 22:28:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-11-06 22:28:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-11-06 22:28:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-11-06 22:28:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-11-06 22:28:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-11-06 22:28:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-11-06 22:28:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-11-06 22:28:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-11-06 22:28:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-11-06 22:28:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-11-06 22:28:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-11-06 22:28:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-11-06 22:28:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-11-06 22:28:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-11-06 22:28:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-11-06 22:28:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-11-06 22:28:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-11-06 22:28:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-11-06 22:28:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-11-06 22:28:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-11-06 22:28:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-11-06 22:28:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-11-06 22:28:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-11-06 22:28:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-11-06 22:28:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 22:28:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-11-06 22:28:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-11-06 22:28:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-11-06 22:28:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-11-06 22:28:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-11-06 22:28:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-11-06 22:28:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-11-06 22:28:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-11-06 22:28:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-11-06 22:28:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-11-06 22:28:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-11-06 22:28:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-11-06 22:28:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-11-06 22:28:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-11-06 22:28:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-11-06 22:28:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-11-06 22:28:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-11-06 22:28:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-11-06 22:28:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-11-06 22:28:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-11-06 22:28:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-11-06 22:28:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-11-06 22:28:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-11-06 22:28:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-11-06 22:28:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-11-06 22:28:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-11-06 22:28:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-11-06 22:28:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-11-06 22:28:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-11-06 22:28:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-11-06 22:28:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-11-06 22:28:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-11-06 22:28:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-11-06 22:28:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-11-06 22:28:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-11-06 22:28:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-11-06 22:28:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-11-06 22:28:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-11-06 22:28:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-11-06 22:28:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-11-06 22:28:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-11-06 22:28:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-11-06 22:28:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-11-06 22:28:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-11-06 22:28:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-11-06 22:28:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-11-06 22:28:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-11-06 22:28:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-11-06 22:28:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-11-06 22:28:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-11-06 22:28:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-11-06 22:28:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-11-06 22:28:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-11-06 22:28:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-11-06 22:28:23,183 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:28:23,184 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-11-06 22:28:23,185 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-11-06 22:28:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-11-06 22:28:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-11-06 22:28:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-11-06 22:28:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-11-06 22:28:23,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-11-06 22:28:23,187 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-11-06 22:28:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-11-06 22:28:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:28:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:28:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:28:23,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:28:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:28:23,886 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:28:23,886 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:28:23,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:23 BoogieIcfgContainer [2020-11-06 22:28:23,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:28:23,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:28:23,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:28:23,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:28:23,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:22" (1/3) ... [2020-11-06 22:28:23,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df25a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:23, skipping insertion in model container [2020-11-06 22:28:23,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:22" (2/3) ... [2020-11-06 22:28:23,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df25a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:23, skipping insertion in model container [2020-11-06 22:28:23,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:23" (3/3) ... [2020-11-06 22:28:23,897 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-11-06 22:28:23,912 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:28:23,916 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:28:23,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:28:23,956 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:28:23,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:28:23,957 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:28:23,957 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:28:23,957 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:28:23,957 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:28:23,957 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:28:23,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:28:23,976 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-11-06 22:28:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-06 22:28:23,982 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:23,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:23,983 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:23,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:23,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1013982880, now seen corresponding path program 1 times [2020-11-06 22:28:23,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:24,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391849595] [2020-11-06 22:28:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:24,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:24,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391849595] [2020-11-06 22:28:24,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:24,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:28:24,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727573946] [2020-11-06 22:28:24,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:28:24,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:24,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:28:24,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:28:24,430 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-11-06 22:28:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:25,281 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2020-11-06 22:28:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:28:25,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-06 22:28:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:25,294 INFO L225 Difference]: With dead ends: 93 [2020-11-06 22:28:25,295 INFO L226 Difference]: Without dead ends: 44 [2020-11-06 22:28:25,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:28:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-06 22:28:25,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-06 22:28:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:28:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-11-06 22:28:25,353 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 14 [2020-11-06 22:28:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:25,354 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-11-06 22:28:25,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:28:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-11-06 22:28:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:28:25,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:25,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:25,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:28:25,357 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:25,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:25,358 INFO L82 PathProgramCache]: Analyzing trace with hash -709310003, now seen corresponding path program 1 times [2020-11-06 22:28:25,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:25,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147440238] [2020-11-06 22:28:25,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:28:25,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147440238] [2020-11-06 22:28:25,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:25,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:28:25,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597372984] [2020-11-06 22:28:25,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:28:25,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:25,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:28:25,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:28:25,746 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 9 states. [2020-11-06 22:28:26,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:26,122 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-11-06 22:28:26,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-06 22:28:26,123 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-11-06 22:28:26,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:26,125 INFO L225 Difference]: With dead ends: 69 [2020-11-06 22:28:26,125 INFO L226 Difference]: Without dead ends: 49 [2020-11-06 22:28:26,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:28:26,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-06 22:28:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-11-06 22:28:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-06 22:28:26,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-11-06 22:28:26,140 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 39 [2020-11-06 22:28:26,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:26,140 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-11-06 22:28:26,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:28:26,140 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-11-06 22:28:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-06 22:28:26,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:26,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:26,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:28:26,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:26,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:26,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1214868628, now seen corresponding path program 1 times [2020-11-06 22:28:26,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:26,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935245627] [2020-11-06 22:28:26,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:28:26,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935245627] [2020-11-06 22:28:26,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260592078] [2020-11-06 22:28:26,405 INFO L95 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 [2020-11-06 22:28:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:26,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-06 22:28:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:28:27,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:28:27,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2020-11-06 22:28:27,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36955724] [2020-11-06 22:28:27,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-06 22:28:27,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:27,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-06 22:28:27,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-11-06 22:28:27,112 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 13 states. [2020-11-06 22:28:27,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:27,753 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-11-06 22:28:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-06 22:28:27,754 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-11-06 22:28:27,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:27,756 INFO L225 Difference]: With dead ends: 79 [2020-11-06 22:28:27,757 INFO L226 Difference]: Without dead ends: 67 [2020-11-06 22:28:27,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-11-06 22:28:27,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-06 22:28:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-11-06 22:28:27,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-06 22:28:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2020-11-06 22:28:27,793 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 39 [2020-11-06 22:28:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:27,793 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2020-11-06 22:28:27,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-06 22:28:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2020-11-06 22:28:27,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-06 22:28:27,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:27,797 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:28,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:28:28,005 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:28,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:28,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1525022366, now seen corresponding path program 1 times [2020-11-06 22:28:28,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:28,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689950228] [2020-11-06 22:28:28,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:28:28,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689950228] [2020-11-06 22:28:28,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078308650] [2020-11-06 22:28:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:28:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:28,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 31 conjunts are in the unsatisfiable core [2020-11-06 22:28:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-06 22:28:29,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:29,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20] total 28 [2020-11-06 22:28:29,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590863566] [2020-11-06 22:28:29,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-06 22:28:29,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:29,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-06 22:28:29,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2020-11-06 22:28:29,060 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 28 states. [2020-11-06 22:28:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:30,705 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2020-11-06 22:28:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 22:28:30,706 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-11-06 22:28:30,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:30,708 INFO L225 Difference]: With dead ends: 95 [2020-11-06 22:28:30,708 INFO L226 Difference]: Without dead ends: 57 [2020-11-06 22:28:30,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2020-11-06 22:28:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-06 22:28:30,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2020-11-06 22:28:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-06 22:28:30,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-11-06 22:28:30,724 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 46 [2020-11-06 22:28:30,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:30,724 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-11-06 22:28:30,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-06 22:28:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-11-06 22:28:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-06 22:28:30,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:30,726 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:30,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:30,931 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash -499530367, now seen corresponding path program 1 times [2020-11-06 22:28:30,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:30,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931261201] [2020-11-06 22:28:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:28:31,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931261201] [2020-11-06 22:28:31,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2536866] [2020-11-06 22:28:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-11-06 22:28:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-06 22:28:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:31,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:31,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:31,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-11-06 22:28:31,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141888516] [2020-11-06 22:28:31,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-06 22:28:31,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-06 22:28:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-11-06 22:28:31,916 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 29 states. [2020-11-06 22:28:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:33,311 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-11-06 22:28:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:28:33,312 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 46 [2020-11-06 22:28:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:33,316 INFO L225 Difference]: With dead ends: 67 [2020-11-06 22:28:33,316 INFO L226 Difference]: Without dead ends: 59 [2020-11-06 22:28:33,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-11-06 22:28:33,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-06 22:28:33,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2020-11-06 22:28:33,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 22:28:33,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-11-06 22:28:33,338 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 46 [2020-11-06 22:28:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:33,340 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-11-06 22:28:33,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-06 22:28:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-11-06 22:28:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-06 22:28:33,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:33,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:33,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:33,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:33,546 INFO L82 PathProgramCache]: Analyzing trace with hash 180528003, now seen corresponding path program 1 times [2020-11-06 22:28:33,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:33,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714127884] [2020-11-06 22:28:33,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:33,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-06 22:28:34,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714127884] [2020-11-06 22:28:34,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333572420] [2020-11-06 22:28:34,003 INFO L95 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 [2020-11-06 22:28:34,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:34,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-06 22:28:34,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:34,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:34,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-11-06 22:28:34,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334146399] [2020-11-06 22:28:34,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-06 22:28:34,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:34,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-06 22:28:34,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-11-06 22:28:34,644 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 28 states. [2020-11-06 22:28:35,632 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-11-06 22:28:35,795 WARN L194 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-11-06 22:28:36,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:36,179 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2020-11-06 22:28:36,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-06 22:28:36,180 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 46 [2020-11-06 22:28:36,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:36,182 INFO L225 Difference]: With dead ends: 73 [2020-11-06 22:28:36,182 INFO L226 Difference]: Without dead ends: 69 [2020-11-06 22:28:36,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=1310, Unknown=0, NotChecked=0, Total=1560 [2020-11-06 22:28:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-06 22:28:36,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 55. [2020-11-06 22:28:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 22:28:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-11-06 22:28:36,210 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 46 [2020-11-06 22:28:36,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:36,211 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-11-06 22:28:36,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-06 22:28:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-11-06 22:28:36,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-06 22:28:36,214 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:36,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:36,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:36,428 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:36,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:36,429 INFO L82 PathProgramCache]: Analyzing trace with hash 156441139, now seen corresponding path program 1 times [2020-11-06 22:28:36,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:36,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552154199] [2020-11-06 22:28:36,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-06 22:28:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-11-06 22:28:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:36,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-06 22:28:36,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552154199] [2020-11-06 22:28:36,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115525950] [2020-11-06 22:28:36,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:37,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-06 22:28:37,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:28:37,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:37,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 35 [2020-11-06 22:28:37,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732217159] [2020-11-06 22:28:37,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-06 22:28:37,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:37,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-06 22:28:37,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1097, Unknown=0, NotChecked=0, Total=1190 [2020-11-06 22:28:37,672 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 35 states. [2020-11-06 22:28:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:39,981 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2020-11-06 22:28:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-06 22:28:39,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 58 [2020-11-06 22:28:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:39,984 INFO L225 Difference]: With dead ends: 76 [2020-11-06 22:28:39,984 INFO L226 Difference]: Without dead ends: 64 [2020-11-06 22:28:39,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=369, Invalid=3053, Unknown=0, NotChecked=0, Total=3422 [2020-11-06 22:28:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-06 22:28:39,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2020-11-06 22:28:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-06 22:28:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-06 22:28:39,998 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 58 [2020-11-06 22:28:39,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:39,998 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-06 22:28:39,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-06 22:28:39,998 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-06 22:28:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-06 22:28:39,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:40,000 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:40,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-06 22:28:40,213 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 836499509, now seen corresponding path program 1 times [2020-11-06 22:28:40,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:40,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620339789] [2020-11-06 22:28:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-06 22:28:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-11-06 22:28:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-06 22:28:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620339789] [2020-11-06 22:28:40,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026725059] [2020-11-06 22:28:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:40,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 25 conjunts are in the unsatisfiable core [2020-11-06 22:28:40,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-06 22:28:41,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:41,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-11-06 22:28:41,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806520831] [2020-11-06 22:28:41,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-06 22:28:41,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:41,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-06 22:28:41,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-11-06 22:28:41,284 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 31 states. [2020-11-06 22:28:42,621 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-11-06 22:28:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:42,623 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-11-06 22:28:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-06 22:28:42,623 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2020-11-06 22:28:42,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:42,624 INFO L225 Difference]: With dead ends: 63 [2020-11-06 22:28:42,624 INFO L226 Difference]: Without dead ends: 48 [2020-11-06 22:28:42,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-11-06 22:28:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-06 22:28:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-06 22:28:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-06 22:28:42,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-06 22:28:42,635 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 58 [2020-11-06 22:28:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:42,635 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-06 22:28:42,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-06 22:28:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-06 22:28:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-06 22:28:42,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:42,637 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:42,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:42,852 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:42,853 INFO L82 PathProgramCache]: Analyzing trace with hash -174617741, now seen corresponding path program 1 times [2020-11-06 22:28:42,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:42,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623663075] [2020-11-06 22:28:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-06 22:28:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-06 22:28:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-06 22:28:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-06 22:28:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-11-06 22:28:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-06 22:28:43,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623663075] [2020-11-06 22:28:43,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784091829] [2020-11-06 22:28:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:43,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-06 22:28:43,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-06 22:28:43,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-06 22:28:43,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8] total 28 [2020-11-06 22:28:43,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947034039] [2020-11-06 22:28:43,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-11-06 22:28:43,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:43,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-11-06 22:28:43,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2020-11-06 22:28:43,853 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 28 states. [2020-11-06 22:28:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:45,086 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-06 22:28:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-06 22:28:45,087 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2020-11-06 22:28:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:45,087 INFO L225 Difference]: With dead ends: 59 [2020-11-06 22:28:45,088 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:28:45,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=202, Invalid=1778, Unknown=0, NotChecked=0, Total=1980 [2020-11-06 22:28:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:28:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:28:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:28:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:28:45,090 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-11-06 22:28:45,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:45,091 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:28:45,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-11-06 22:28:45,091 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:28:45,091 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:28:45,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:45,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:28:45,780 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 24 [2020-11-06 22:28:46,146 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 28 [2020-11-06 22:28:46,419 WARN L194 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 30 [2020-11-06 22:28:46,648 WARN L194 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 23 [2020-11-06 22:28:47,002 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-11-06 22:28:47,357 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:28:47,357 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:28:47,358 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:28:47,358 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:28:47,359 INFO L262 CegarLoopResult]: At program point L881(line 881) the Hoare annotation is: (let ((.cse1 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (.cse2 (= my_malloc_~size 8)) (.cse0 (not (= |my_malloc_#in~size| 8)))) (and (or (not (= |old(~guard_malloc_counter~0.offset)| 0)) .cse0 (not (= ~elem~0.offset 0)) (and .cse1 .cse2 (= ~guard_malloc_counter~0.offset 0))) (or (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (and .cse1 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) .cse2) .cse0))) [2020-11-06 22:28:47,359 INFO L266 CegarLoopResult]: For program point my_mallocFINAL(lines 880 882) no Hoare annotation was computed. [2020-11-06 22:28:47,359 INFO L266 CegarLoopResult]: For program point L881-1(line 881) no Hoare annotation was computed. [2020-11-06 22:28:47,359 INFO L262 CegarLoopResult]: At program point my_mallocENTRY(lines 880 882) the Hoare annotation is: (let ((.cse0 (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (.cse1 (not (= |my_malloc_#in~size| 8)))) (and (or (and .cse0 (= ~guard_malloc_counter~0.offset 0)) (not (= |old(~guard_malloc_counter~0.offset)| 0)) .cse1 (not (= ~elem~0.offset 0))) (or (and .cse0 (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (<= 1 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) .cse1))) [2020-11-06 22:28:47,359 INFO L266 CegarLoopResult]: For program point my_mallocEXIT(lines 880 882) no Hoare annotation was computed. [2020-11-06 22:28:47,359 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:47,360 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~elem~0.offset |old(~elem~0.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#head~0.base| |old(~#head~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~elem~0.base |old(~elem~0.base)|)) [2020-11-06 22:28:47,360 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:47,360 INFO L266 CegarLoopResult]: For program point L898-2(lines 897 900) no Hoare annotation was computed. [2020-11-06 22:28:47,360 INFO L266 CegarLoopResult]: For program point list_delEXIT(lines 897 900) no Hoare annotation was computed. [2020-11-06 22:28:47,360 INFO L262 CegarLoopResult]: At program point list_delENTRY(lines 897 900) the Hoare annotation is: (or (not (<= 1 ~guard_malloc_counter~0.offset)) (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset))) [2020-11-06 22:28:47,360 INFO L266 CegarLoopResult]: For program point L898(lines 898 899) no Hoare annotation was computed. [2020-11-06 22:28:47,360 INFO L262 CegarLoopResult]: At program point list_addENTRY(lines 891 895) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse1 (and (= |old(~elem~0.base)| ~elem~0.base) (= |old(~elem~0.offset)| ~elem~0.offset)))) (and (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0 .cse1) (or .cse0 .cse1 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point L893(lines 893 894) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point L892(line 892) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point L893-2(lines 891 895) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L262 CegarLoopResult]: At program point L892-2(line 892) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset)))) (and (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0) (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))))) [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point L892-3(line 892) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point list_addEXIT(lines 891 895) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point __blast_assertEXIT(lines 6 9) no Hoare annotation was computed. [2020-11-06 22:28:47,361 INFO L266 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-06 22:28:47,362 INFO L266 CegarLoopResult]: For program point __blast_assertFINAL(lines 6 9) no Hoare annotation was computed. [2020-11-06 22:28:47,362 INFO L269 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-11-06 22:28:47,362 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:47,362 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~elem~0.offset 0) (= ~guard_malloc_counter~0.offset 0)) [2020-11-06 22:28:47,362 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:28:47,362 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:47,362 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 904 919) the Hoare annotation is: (or (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.offset 0))) [2020-11-06 22:28:47,362 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 904 919) no Hoare annotation was computed. [2020-11-06 22:28:47,363 INFO L262 CegarLoopResult]: At program point L911(line 911) the Hoare annotation is: (let ((.cse0 (<= 2 main_~dev2~0.offset))) (or (and (<= ~elem~0.offset 0) .cse0 (<= 1 ~guard_malloc_counter~0.offset)) (not (= |old(~guard_malloc_counter~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (not (= |old(~elem~0.offset)| 0)))) [2020-11-06 22:28:47,363 INFO L262 CegarLoopResult]: At program point L910(line 910) the Hoare annotation is: (let ((.cse0 (<= 2 main_~dev2~0.offset)) (.cse1 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse2 (<= 1 ~guard_malloc_counter~0.offset))) (or (and .cse0 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse1 .cse2) (and (<= ~elem~0.offset 0) .cse0 .cse2) (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (<= main_~dev2~0.offset 2) .cse0 (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse1 .cse2))) [2020-11-06 22:28:47,363 INFO L262 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (or (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (<= main_~dev2~0.offset 2) (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= 1 ~guard_malloc_counter~0.offset))) [2020-11-06 22:28:47,363 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 904 919) no Hoare annotation was computed. [2020-11-06 22:28:47,363 INFO L266 CegarLoopResult]: For program point L908(lines 908 917) no Hoare annotation was computed. [2020-11-06 22:28:47,364 INFO L262 CegarLoopResult]: At program point L909-1(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (and (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.base)| ~elem~0.base) .cse0) (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (<= main_~dev2~0.offset 2) (<= 2 main_~dev2~0.offset) (= main_~dev2~0.base ~elem~0.base) (= main_~dev2~0.offset ~elem~0.offset) .cse0 (<= 1 ~guard_malloc_counter~0.offset)))) [2020-11-06 22:28:47,364 INFO L262 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (let ((.cse0 (= |old(~elem~0.base)| ~elem~0.base))) (or (and (= main_~dev1~0.base 0) (= main_~dev1~0.offset 0) .cse0 (= |old(~elem~0.offset)| ~elem~0.offset) (<= 1 ~guard_malloc_counter~0.offset)) (and (<= ~guard_malloc_counter~0.offset (+ |old(~guard_malloc_counter~0.offset)| 1)) (<= 1 main_~dev1~0.offset) (= ~elem~0.offset 0) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) .cse0) (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)))) [2020-11-06 22:28:47,364 INFO L266 CegarLoopResult]: For program point L908-1(lines 908 917) no Hoare annotation was computed. [2020-11-06 22:28:47,364 INFO L262 CegarLoopResult]: At program point L906(line 906) the Hoare annotation is: (or (not (= |old(~guard_malloc_counter~0.offset)| 0)) (not (= |old(~elem~0.offset)| 0)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~elem~0.offset 0) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.offset 0))) [2020-11-06 22:28:47,364 INFO L266 CegarLoopResult]: For program point L907-1(line 907) no Hoare annotation was computed. [2020-11-06 22:28:47,364 INFO L266 CegarLoopResult]: For program point L906-1(line 906) no Hoare annotation was computed. [2020-11-06 22:28:47,364 INFO L262 CegarLoopResult]: At program point __getMemoryENTRY(lines 871 878) the Hoare annotation is: (or (not (<= |old(~guard_malloc_counter~0.offset)| 1)) (not (= |__getMemory_#in~size| 8)) (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-11-06 22:28:47,365 INFO L266 CegarLoopResult]: For program point __getMemoryEXIT(lines 871 878) no Hoare annotation was computed. [2020-11-06 22:28:47,365 INFO L266 CegarLoopResult]: For program point __getMemoryFINAL(lines 871 878) no Hoare annotation was computed. [2020-11-06 22:28:47,365 INFO L266 CegarLoopResult]: For program point L875(lines 875 876) no Hoare annotation was computed. [2020-11-06 22:28:47,365 INFO L266 CegarLoopResult]: For program point L873(line 873) no Hoare annotation was computed. [2020-11-06 22:28:47,365 INFO L262 CegarLoopResult]: At program point L873-2(line 873) the Hoare annotation is: (or (not (<= |old(~guard_malloc_counter~0.offset)| 1)) (not (= |__getMemory_#in~size| 8)) (not (= ~elem~0.offset 0)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|))) [2020-11-06 22:28:47,365 INFO L266 CegarLoopResult]: For program point L873-3(line 873) no Hoare annotation was computed. [2020-11-06 22:28:47,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:47 BoogieIcfgContainer [2020-11-06 22:28:47,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:28:47,372 INFO L168 Benchmark]: Toolchain (without parser) took 24959.02 ms. Allocated memory was 151.0 MB in the beginning and 345.0 MB in the end (delta: 194.0 MB). Free memory was 125.9 MB in the beginning and 213.4 MB in the end (delta: -87.5 MB). Peak memory consumption was 203.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:47,373 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:28:47,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.84 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 100.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:47,374 INFO L168 Benchmark]: Boogie Preprocessor took 61.82 ms. Allocated memory is still 151.0 MB. Free memory was 100.8 MB in the beginning and 98.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:47,375 INFO L168 Benchmark]: RCFGBuilder took 832.47 ms. Allocated memory is still 151.0 MB. Free memory was 98.1 MB in the beginning and 97.8 MB in the end (delta: 315.9 kB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:47,376 INFO L168 Benchmark]: TraceAbstraction took 23481.36 ms. Allocated memory was 151.0 MB in the beginning and 345.0 MB in the end (delta: 194.0 MB). Free memory was 97.3 MB in the beginning and 213.4 MB in the end (delta: -116.1 MB). Peak memory consumption was 173.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:47,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 570.84 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 100.8 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.82 ms. Allocated memory is still 151.0 MB. Free memory was 100.8 MB in the beginning and 98.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 832.47 ms. Allocated memory is still 151.0 MB. Free memory was 98.1 MB in the beginning and 97.8 MB in the end (delta: 315.9 kB). Peak memory consumption was 11.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23481.36 ms. Allocated memory was 151.0 MB in the beginning and 345.0 MB in the end (delta: 194.0 MB). Free memory was 97.3 MB in the beginning and 213.4 MB in the end (delta: -116.1 MB). Peak memory consumption was 173.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 322 SDtfs, 632 SDslu, 1059 SDs, 0 SdLazy, 5596 SolverSat, 627 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 10.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 48 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 19 LocationsWithAnnotation, 85 PreInvPairs, 96 NumberOfFragments, 526 HoareAnnotationTreeSize, 85 FomulaSimplifications, 6396 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 19 FomulaSimplificationsInter, 3094 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 739 ConstructedInterpolants, 0 QuantifiedInterpolants, 164331 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2319 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 139/237 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 correct! Received shutdown request...