/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:29:31,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:29:31,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:29:31,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:29:31,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:29:31,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:29:31,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:29:31,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:29:31,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:29:31,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:29:31,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:29:31,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:29:31,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:29:31,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:29:31,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:29:31,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:29:31,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:29:31,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:29:31,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:29:31,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:29:31,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:29:31,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:29:31,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:29:31,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:29:31,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:29:31,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:29:31,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:29:31,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:29:31,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:29:31,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:29:31,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:29:31,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:29:31,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:29:31,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:29:31,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:29:31,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:29:31,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:29:31,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:29:31,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:29:31,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:29:31,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:29:31,939 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 [2020-07-20 11:29:31,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:29:31,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:29:31,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:29:31,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:29:31,961 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:29:31,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:29:31,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:29:31,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:29:31,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:29:31,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:29:31,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:29:31,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:29:31,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:29:31,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:29:31,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:29:31,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:29:31,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:29:31,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:29:31,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:29:31,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:29:31,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:29:31,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:29:31,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:29:31,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:29:31,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:29:31,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:29:31,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:31,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:29:31,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:29:31,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:29:32,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:29:32,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:29:32,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:29:32,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:29:32,358 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:29:32,359 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-20 11:29:32,454 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aaa06a40/4681dfbedf51407c9ff3bee40b4b654a/FLAG336002a48 [2020-07-20 11:29:33,164 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:29:33,165 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-20 11:29:33,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aaa06a40/4681dfbedf51407c9ff3bee40b4b654a/FLAG336002a48 [2020-07-20 11:29:33,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1aaa06a40/4681dfbedf51407c9ff3bee40b4b654a [2020-07-20 11:29:33,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:29:33,515 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:29:33,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:33,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:29:33,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:29:33,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:33" (1/1) ... [2020-07-20 11:29:33,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e4fe6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:33, skipping insertion in model container [2020-07-20 11:29:33,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:33" (1/1) ... [2020-07-20 11:29:33,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:29:33,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:29:34,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:34,199 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:29:34,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:34,365 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:29:34,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34 WrapperNode [2020-07-20 11:29:34,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:34,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:29:34,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:29:34,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:29:34,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (1/1) ... [2020-07-20 11:29:34,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:29:34,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:29:34,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:29:34,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:29:34,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (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 [2020-07-20 11:29:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:29:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:29:34,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 11:29:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-20 11:29:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-20 11:29:34,547 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-20 11:29:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-20 11:29:34,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 11:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-20 11:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-20 11:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-20 11:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-20 11:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-20 11:29:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-20 11:29:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-20 11:29:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-20 11:29:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-20 11:29:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-20 11:29:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-20 11:29:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-20 11:29:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-20 11:29:34,555 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-20 11:29:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-20 11:29:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-20 11:29:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-20 11:29:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-20 11:29:34,558 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-20 11:29:34,559 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-20 11:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-20 11:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-20 11:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 11:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-20 11:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-20 11:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-20 11:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-20 11:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-20 11:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-20 11:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-20 11:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-20 11:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-20 11:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-20 11:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-20 11:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-20 11:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-20 11:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 11:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-20 11:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-20 11:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-20 11:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-20 11:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-20 11:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-20 11:29:34,567 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-20 11:29:34,568 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-20 11:29:34,568 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-20 11:29:34,569 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-20 11:29:34,569 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-20 11:29:34,569 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-20 11:29:34,569 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-20 11:29:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-20 11:29:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-20 11:29:34,570 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-20 11:29:34,571 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-20 11:29:34,571 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-20 11:29:34,571 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-20 11:29:34,572 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-20 11:29:34,572 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-20 11:29:34,573 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-20 11:29:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-20 11:29:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-20 11:29:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-20 11:29:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-20 11:29:34,574 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-20 11:29:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-20 11:29:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-20 11:29:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-20 11:29:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-20 11:29:34,575 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-20 11:29:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-20 11:29:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-20 11:29:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-20 11:29:34,576 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-20 11:29:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-20 11:29:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-20 11:29:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-20 11:29:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-20 11:29:34,577 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-20 11:29:34,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:29:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:29:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:29:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:29:34,579 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:29:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-20 11:29:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:29:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-20 11:29:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-20 11:29:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-20 11:29:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-20 11:29:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-20 11:29:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-20 11:29:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:29:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-20 11:29:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-20 11:29:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-20 11:29:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-20 11:29:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:29:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:29:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:29:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 11:29:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:29:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:29:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:29:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:29:35,296 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:29:35,297 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:29:35,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:35 BoogieIcfgContainer [2020-07-20 11:29:35,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:29:35,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:29:35,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:29:35,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:29:35,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:29:33" (1/3) ... [2020-07-20 11:29:35,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:35, skipping insertion in model container [2020-07-20 11:29:35,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:34" (2/3) ... [2020-07-20 11:29:35,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:35, skipping insertion in model container [2020-07-20 11:29:35,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:35" (3/3) ... [2020-07-20 11:29:35,313 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-20 11:29:35,327 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:29:35,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:29:35,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:29:35,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:29:35,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:29:35,388 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:29:35,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:29:35,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:29:35,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:29:35,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:29:35,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:29:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-20 11:29:35,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:29:35,423 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:35,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:29:35,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:35,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-20 11:29:35,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:35,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051581735] [2020-07-20 11:29:35,448 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:35,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:29:35,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:35,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:35,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051581735] [2020-07-20 11:29:35,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:35,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:29:35,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006869272] [2020-07-20 11:29:35,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:29:35,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:35,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:29:35,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:29:35,946 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 6 states. [2020-07-20 11:29:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:36,077 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2020-07-20 11:29:36,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:29:36,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-20 11:29:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:36,091 INFO L225 Difference]: With dead ends: 84 [2020-07-20 11:29:36,092 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 11:29:36,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:29:36,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 11:29:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 11:29:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 11:29:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-20 11:29:36,150 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-20 11:29:36,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:36,150 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-20 11:29:36,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:29:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-20 11:29:36,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:36,154 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:36,155 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] [2020-07-20 11:29:36,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:36,372 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:36,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:36,373 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-20 11:29:36,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:36,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796635560] [2020-07-20 11:29:36,375 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:36,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:29:36,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:29:36,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:36,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:29:36,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796635560] [2020-07-20 11:29:36,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:36,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-20 11:29:36,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179158231] [2020-07-20 11:29:36,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:29:36,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:29:36,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:36,839 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2020-07-20 11:29:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:36,885 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-07-20 11:29:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:29:36,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 11:29:36,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:36,891 INFO L225 Difference]: With dead ends: 65 [2020-07-20 11:29:36,892 INFO L226 Difference]: Without dead ends: 44 [2020-07-20 11:29:36,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:36,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-20 11:29:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-20 11:29:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-20 11:29:36,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-20 11:29:36,909 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-20 11:29:36,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:36,910 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-20 11:29:36,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:29:36,910 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-20 11:29:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:36,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:36,913 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] [2020-07-20 11:29:37,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:37,129 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash -894641304, now seen corresponding path program 1 times [2020-07-20 11:29:37,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:37,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902180382] [2020-07-20 11:29:37,131 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:37,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:29:37,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:29:37,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:37,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902180382] [2020-07-20 11:29:37,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:37,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:29:37,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622957762] [2020-07-20 11:29:37,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:29:37,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:37,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:29:37,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:37,409 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 7 states. [2020-07-20 11:29:37,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:37,459 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2020-07-20 11:29:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:29:37,460 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 11:29:37,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:37,462 INFO L225 Difference]: With dead ends: 63 [2020-07-20 11:29:37,462 INFO L226 Difference]: Without dead ends: 39 [2020-07-20 11:29:37,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-07-20 11:29:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-07-20 11:29:37,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-20 11:29:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-20 11:29:37,472 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-07-20 11:29:37,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:37,473 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-20 11:29:37,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:29:37,473 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-20 11:29:37,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:37,475 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:37,475 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] [2020-07-20 11:29:37,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:37,685 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:37,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-20 11:29:37,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:37,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116326042] [2020-07-20 11:29:37,687 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:37,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:29:37,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:29:38,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:38,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116326042] [2020-07-20 11:29:38,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:38,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 11:29:38,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996470810] [2020-07-20 11:29:38,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 11:29:38,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:38,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 11:29:38,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:29:38,084 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 13 states. [2020-07-20 11:29:38,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:38,763 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-07-20 11:29:38,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:29:38,764 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-20 11:29:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:38,770 INFO L225 Difference]: With dead ends: 71 [2020-07-20 11:29:38,770 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 11:29:38,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:29:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 11:29:38,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-07-20 11:29:38,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-20 11:29:38,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-07-20 11:29:38,809 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 38 [2020-07-20 11:29:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:38,810 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-07-20 11:29:38,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 11:29:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-20 11:29:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:29:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:38,817 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] [2020-07-20 11:29:39,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:39,034 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:39,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-20 11:29:39,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:39,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421174914] [2020-07-20 11:29:39,036 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:39,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:39,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:39,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:40,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421174914] [2020-07-20 11:29:40,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:40,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2020-07-20 11:29:40,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631080193] [2020-07-20 11:29:40,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:29:40,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:40,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:29:40,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:29:40,125 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 22 states. [2020-07-20 11:29:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:41,125 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-20 11:29:41,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:29:41,127 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-07-20 11:29:41,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:41,128 INFO L225 Difference]: With dead ends: 62 [2020-07-20 11:29:41,128 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 11:29:41,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 11:29:41,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 11:29:41,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-07-20 11:29:41,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 11:29:41,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-20 11:29:41,145 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-07-20 11:29:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:41,146 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-20 11:29:41,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:29:41,146 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-20 11:29:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:29:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:41,148 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] [2020-07-20 11:29:41,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:41,363 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:41,364 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-20 11:29:41,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:41,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024778860] [2020-07-20 11:29:41,365 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:41,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:41,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:41,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:42,134 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:29:42,137 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:29:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:29:42,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024778860] [2020-07-20 11:29:42,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:42,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-07-20 11:29:42,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873742025] [2020-07-20 11:29:42,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 11:29:42,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:42,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 11:29:42,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:29:42,248 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 24 states. [2020-07-20 11:29:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:43,201 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-20 11:29:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 11:29:43,203 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-07-20 11:29:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:43,205 INFO L225 Difference]: With dead ends: 66 [2020-07-20 11:29:43,205 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 11:29:43,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 11:29:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 11:29:43,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-07-20 11:29:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-20 11:29:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-20 11:29:43,218 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-20 11:29:43,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:43,218 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-20 11:29:43,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 11:29:43,219 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-20 11:29:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:43,220 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:43,220 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] [2020-07-20 11:29:43,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:43,436 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:43,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-20 11:29:43,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:43,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354056747] [2020-07-20 11:29:43,438 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:43,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:43,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:29:43,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:29:44,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354056747] [2020-07-20 11:29:44,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:44,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 25 [2020-07-20 11:29:44,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196425738] [2020-07-20 11:29:44,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 11:29:44,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:44,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 11:29:44,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-07-20 11:29:44,518 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 25 states. [2020-07-20 11:29:45,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:45,657 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-20 11:29:45,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:29:45,658 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-07-20 11:29:45,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:45,660 INFO L225 Difference]: With dead ends: 66 [2020-07-20 11:29:45,660 INFO L226 Difference]: Without dead ends: 60 [2020-07-20 11:29:45,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 79 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 11:29:45,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-20 11:29:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-07-20 11:29:45,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 11:29:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-20 11:29:45,672 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-07-20 11:29:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:45,673 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-20 11:29:45,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 11:29:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-20 11:29:45,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:45,676 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:45,676 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] [2020-07-20 11:29:45,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:45,890 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:45,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-20 11:29:45,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:45,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287667908] [2020-07-20 11:29:45,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-20 11:29:46,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:29:46,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:47,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-20 11:29:47,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287667908] [2020-07-20 11:29:47,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:47,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2020-07-20 11:29:47,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225521222] [2020-07-20 11:29:47,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 11:29:47,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:47,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 11:29:47,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:29:47,026 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 23 states. [2020-07-20 11:29:48,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:48,159 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-20 11:29:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:29:48,159 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-07-20 11:29:48,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:48,160 INFO L225 Difference]: With dead ends: 63 [2020-07-20 11:29:48,161 INFO L226 Difference]: Without dead ends: 49 [2020-07-20 11:29:48,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 11:29:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-20 11:29:48,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-20 11:29:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 11:29:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-07-20 11:29:48,190 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-07-20 11:29:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:48,190 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-07-20 11:29:48,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 11:29:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-07-20 11:29:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:48,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:48,192 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] [2020-07-20 11:29:48,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:48,408 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:48,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:48,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-20 11:29:48,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:48,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496415155] [2020-07-20 11:29:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:48,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:29:48,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:29:48,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:48,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496415155] [2020-07-20 11:29:48,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:48,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-20 11:29:48,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126116536] [2020-07-20 11:29:48,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 11:29:48,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:48,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 11:29:48,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:29:48,741 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 15 states. [2020-07-20 11:29:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:49,280 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-20 11:29:49,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:29:49,283 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-20 11:29:49,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:49,284 INFO L225 Difference]: With dead ends: 60 [2020-07-20 11:29:49,284 INFO L226 Difference]: Without dead ends: 52 [2020-07-20 11:29:49,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-07-20 11:29:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-20 11:29:49,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-07-20 11:29:49,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 11:29:49,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-07-20 11:29:49,294 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-07-20 11:29:49,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:49,294 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-07-20 11:29:49,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 11:29:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-07-20 11:29:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:49,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:49,296 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] [2020-07-20 11:29:49,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:49,502 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:49,503 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-07-20 11:29:49,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:49,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082801491] [2020-07-20 11:29:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:49,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 11:29:49,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 11:29:49,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-20 11:29:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082801491] [2020-07-20 11:29:49,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:49,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2020-07-20 11:29:49,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472191251] [2020-07-20 11:29:49,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 11:29:49,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:49,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 11:29:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:29:49,979 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-07-20 11:29:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:50,211 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-20 11:29:50,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:29:50,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-20 11:29:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:50,213 INFO L225 Difference]: With dead ends: 47 [2020-07-20 11:29:50,213 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:29:50,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-07-20 11:29:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:29:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:29:50,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:29:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:29:50,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-20 11:29:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:50,216 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:29:50,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 11:29:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:29:50,216 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:29:50,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:50,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:29:50,954 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-07-20 11:29:51,068 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-07-20 11:29:51,727 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-20 11:29:51,728 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (let ((.cse0 (not (<= 8 |my_malloc_#in~size|)))) (and (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) .cse0) (or .cse0 (<= 8 my_malloc_~size)))) [2020-07-20 11:29:51,728 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-20 11:29:51,728 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (<= 8 |my_malloc_#in~size|))) [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-20 11:29:51,729 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (or (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (<= 1 ~guard_malloc_counter~0.offset))) (<= ~elem~0.offset |old(~elem~0.offset)|)) [2020-07-20 11:29:51,730 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) (.cse1 (not (<= 1 ~guard_malloc_counter~0.offset)))) (and (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse1) (or .cse0 (not (<= |old(~elem~0.offset)| 0)) (not (<= 2 |list_add_#in~new.offset|)) .cse1) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (<= ~elem~0.offset |old(~elem~0.offset)|)))) [2020-07-20 11:29:51,730 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-20 11:29:51,730 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-20 11:29:51,730 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-20 11:29:51,731 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (not (<= 1 ~guard_malloc_counter~0.offset)))) [2020-07-20 11:29:51,731 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-20 11:29:51,731 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-20 11:29:51,731 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-20 11:29:51,731 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 11:29:51,731 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 11:29:51,732 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-20 11:29:51,732 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:29:51,732 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~guard_malloc_counter~0.offset) (<= ~elem~0.offset 0)) [2020-07-20 11:29:51,732 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:29:51,732 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:29:51,732 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (<= |old(~elem~0.offset)| 0))) [2020-07-20 11:29:51,733 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-20 11:29:51,733 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (not (<= |old(~elem~0.offset)| 0)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-20 11:29:51,733 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-20 11:29:51,733 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (not (<= |old(~elem~0.offset)| 0)) (and .cse0 .cse3 (<= ~elem~0.offset 0)))) [2020-07-20 11:29:51,734 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (<= |old(~elem~0.offset)| 0))) [2020-07-20 11:29:51,734 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-20 11:29:51,734 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (<= 2 main_~dev2~0.offset) (= main_~dev2~0.offset ~elem~0.offset)) (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 .cse2 (<= ~elem~0.offset |old(~elem~0.offset)|)) (not (<= |old(~elem~0.offset)| 0)))) [2020-07-20 11:29:51,734 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 main_~dev1~0.base) (= 0 main_~dev1~0.offset)) (not (<= |old(~elem~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) [2020-07-20 11:29:51,734 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-20 11:29:51,735 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (<= |old(~elem~0.offset)| 0))) [2020-07-20 11:29:51,735 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-20 11:29:51,735 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-20 11:29:51,735 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (<= |old(~guard_malloc_counter~0.offset)| ~guard_malloc_counter~0.offset) (not (<= 8 |__getMemory_#in~size|))) [2020-07-20 11:29:51,735 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-20 11:29:51,735 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-20 11:29:51,736 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-20 11:29:51,736 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-20 11:29:51,736 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (<= ~elem~0.offset 0)) (not (<= 8 |__getMemory_#in~size|))) [2020-07-20 11:29:51,736 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-20 11:29:51,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:29:51 BoogieIcfgContainer [2020-07-20 11:29:51,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:29:51,747 INFO L168 Benchmark]: Toolchain (without parser) took 18233.79 ms. Allocated memory was 138.4 MB in the beginning and 380.6 MB in the end (delta: 242.2 MB). Free memory was 98.0 MB in the beginning and 206.3 MB in the end (delta: -108.3 MB). Peak memory consumption was 133.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,748 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 845.86 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 97.6 MB in the beginning and 164.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,750 INFO L168 Benchmark]: Boogie Preprocessor took 70.74 ms. Allocated memory is still 199.8 MB. Free memory was 164.4 MB in the beginning and 161.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,751 INFO L168 Benchmark]: RCFGBuilder took 863.83 ms. Allocated memory is still 199.8 MB. Free memory was 161.6 MB in the beginning and 115.7 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,752 INFO L168 Benchmark]: TraceAbstraction took 16440.32 ms. Allocated memory was 199.8 MB in the beginning and 380.6 MB in the end (delta: 180.9 MB). Free memory was 115.7 MB in the beginning and 206.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:51,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 138.4 MB. Free memory was 117.7 MB in the beginning and 117.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 845.86 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 97.6 MB in the beginning and 164.4 MB in the end (delta: -66.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.74 ms. Allocated memory is still 199.8 MB. Free memory was 164.4 MB in the beginning and 161.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 863.83 ms. Allocated memory is still 199.8 MB. Free memory was 161.6 MB in the beginning and 115.7 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16440.32 ms. Allocated memory was 199.8 MB in the beginning and 380.6 MB in the end (delta: 180.9 MB). Free memory was 115.7 MB in the beginning and 206.3 MB in the end (delta: -90.6 MB). Peak memory consumption was 90.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 360 SDtfs, 422 SDslu, 1352 SDs, 0 SdLazy, 3587 SolverSat, 443 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 827 GetRequests, 563 SyntacticMatches, 47 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, 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, 10 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 431 HoareAnnotationTreeSize, 73 FomulaSimplifications, 866 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 18 FomulaSimplificationsInter, 881 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 445 NumberOfCodeBlocks, 445 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 728 ConstructedInterpolants, 0 QuantifiedInterpolants, 115989 SizeOfPredicates, 56 NumberOfNonLiveVariables, 2611 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 163/243 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...