/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.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:29:29,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:29:29,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:29:29,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:29:29,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:29:29,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:29:29,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:29:29,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:29:29,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:29:29,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:29:29,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:29:29,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:29:29,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:29:29,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:29:29,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:29:29,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:29:29,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:29:29,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:29:29,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:29:29,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:29:29,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:29:29,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:29:29,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:29:29,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:29:29,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 11:29:29,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 11:29:29,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 11:29:29,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 11:29:29,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 11:29:29,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 11:29:29,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 11:29:29,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 11:29:29,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 11:29:29,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 11:29:29,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 11:29:29,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 11:29:29,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 11:29:29,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 11:29:29,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:29:29,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:29:29,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:29:29,896 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 11:29:29,931 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:29:29,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:29:29,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:29:29,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:29:29,933 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:29:29,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:29:29,933 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:29:29,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:29:29,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:29:29,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:29:29,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:29:29,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:29:29,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:29:29,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:29:29,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:29:29,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:29:29,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:29:29,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:29:29,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:29:29,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:29:29,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:29:29,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:29,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:29:29,937 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:29:29,938 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 11:29:30,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:29:30,229 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:29:30,233 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:29:30,234 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:29:30,237 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:29:30,238 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-20 11:29:30,304 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f394009f/0eac890b25884a9bbb5617aff51f3d76/FLAGce01f8590 [2020-07-20 11:29:30,860 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:29:30,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-20 11:29:30,871 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f394009f/0eac890b25884a9bbb5617aff51f3d76/FLAGce01f8590 [2020-07-20 11:29:31,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f394009f/0eac890b25884a9bbb5617aff51f3d76 [2020-07-20 11:29:31,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:29:31,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:29:31,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:31,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:29:31,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:29:31,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f84de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31, skipping insertion in model container [2020-07-20 11:29:31,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:29:31,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:29:31,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:31,554 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:29:31,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:29:31,783 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:29:31,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31 WrapperNode [2020-07-20 11:29:31,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:29:31,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:29:31,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:29:31,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:29:31,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (1/1) ... [2020-07-20 11:29:31,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:29:31,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:29:31,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:29:31,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:29:31,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (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 11:29:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:29:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-20 11:29:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:29:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-20 11:29:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-20 11:29:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-20 11:29:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-20 11:29:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-20 11:29:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-20 11:29:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-20 11:29:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-20 11:29:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-20 11:29:31,919 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-20 11:29:31,920 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-20 11:29:31,921 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-20 11:29:31,922 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-20 11:29:31,923 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-20 11:29:31,924 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-20 11:29:31,925 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 11:29:31,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 11:29:31,927 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-20 11:29:31,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-20 11:29:31,929 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 11:29:31,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 11:29:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:29:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 11:29:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 11:29:31,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 11:29:32,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:29:32,420 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 11:29:32,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:32 BoogieIcfgContainer [2020-07-20 11:29:32,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:29:32,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:29:32,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:29:32,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:29:32,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:29:31" (1/3) ... [2020-07-20 11:29:32,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5649a875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:32, skipping insertion in model container [2020-07-20 11:29:32,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:29:31" (2/3) ... [2020-07-20 11:29:32,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5649a875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:29:32, skipping insertion in model container [2020-07-20 11:29:32,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:29:32" (3/3) ... [2020-07-20 11:29:32,436 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-07-20 11:29:32,447 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:29:32,455 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:29:32,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:29:32,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:29:32,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:29:32,496 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:29:32,496 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:29:32,496 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:29:32,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:29:32,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:29:32,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:29:32,528 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-07-20 11:29:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 11:29:32,533 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:32,534 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:29:32,535 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:32,541 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-07-20 11:29:32,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:32,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310101269] [2020-07-20 11:29:32,552 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 11:29:32,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:32,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:29:32,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:32,827 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 11:29:32,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:32,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310101269] [2020-07-20 11:29:32,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:32,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:29:32,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846752533] [2020-07-20 11:29:32,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:29:32,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:29:32,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:29:32,853 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2020-07-20 11:29:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:32,951 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2020-07-20 11:29:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:29:32,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-07-20 11:29:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:32,964 INFO L225 Difference]: With dead ends: 86 [2020-07-20 11:29:32,964 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 11:29:32,968 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 11:29:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 11:29:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 11:29:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 11:29:33,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-07-20 11:29:33,016 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-07-20 11:29:33,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:33,016 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-07-20 11:29:33,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:29:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-07-20 11:29:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:33,019 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:33,020 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 11:29:33,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:33,234 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:33,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-07-20 11:29:33,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:33,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485760350] [2020-07-20 11:29:33,237 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 11:29:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:33,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:29:33,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:33,449 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 11:29:33,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:33,576 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 11:29:33,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485760350] [2020-07-20 11:29:33,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:33,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-07-20 11:29:33,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321690534] [2020-07-20 11:29:33,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:29:33,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:33,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:29:33,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:33,581 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-07-20 11:29:33,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:33,607 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-07-20 11:29:33,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:29:33,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 11:29:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:33,612 INFO L225 Difference]: With dead ends: 67 [2020-07-20 11:29:33,612 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 11:29:33,613 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 11:29:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 11:29:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-07-20 11:29:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-20 11:29:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-07-20 11:29:33,626 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-07-20 11:29:33,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:33,627 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-07-20 11:29:33,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:29:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-07-20 11:29:33,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:33,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:33,628 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 11:29:33,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:33,831 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:33,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1948890756, now seen corresponding path program 1 times [2020-07-20 11:29:33,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:33,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846853833] [2020-07-20 11:29:33,832 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 11:29:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:33,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:29:34,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:34,092 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 11:29:34,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:34,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846853833] [2020-07-20 11:29:34,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:34,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 11:29:34,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439956833] [2020-07-20 11:29:34,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:29:34,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:34,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:29:34,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:29:34,096 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 7 states. [2020-07-20 11:29:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:34,142 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2020-07-20 11:29:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:29:34,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-20 11:29:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:34,145 INFO L225 Difference]: With dead ends: 65 [2020-07-20 11:29:34,145 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 11:29:34,146 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 11:29:34,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 11:29:34,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-20 11:29:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 11:29:34,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-07-20 11:29:34,161 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-07-20 11:29:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:34,162 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-07-20 11:29:34,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:29:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-07-20 11:29:34,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-20 11:29:34,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:34,165 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 11:29:34,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:34,367 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:34,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:34,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-07-20 11:29:34,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:34,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500883552] [2020-07-20 11:29:34,369 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 11:29:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-20 11:29:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:34,726 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 11:29:34,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:34,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500883552] [2020-07-20 11:29:34,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:34,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-20 11:29:34,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214176515] [2020-07-20 11:29:34,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 11:29:34,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 11:29:34,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-20 11:29:34,730 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-07-20 11:29:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:35,318 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-07-20 11:29:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-20 11:29:35,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-20 11:29:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:35,322 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:29:35,323 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 11:29:35,324 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 11:29:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 11:29:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-07-20 11:29:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-20 11:29:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2020-07-20 11:29:35,353 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2020-07-20 11:29:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:35,356 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2020-07-20 11:29:35,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 11:29:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2020-07-20 11:29:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:29:35,358 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:35,358 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 11:29:35,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:35,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:35,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:35,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-07-20 11:29:35,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:35,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394829941] [2020-07-20 11:29:35,578 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 11:29:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:35,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:35,922 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 11:29:35,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:36,444 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 11:29:36,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394829941] [2020-07-20 11:29:36,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:36,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2020-07-20 11:29:36,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709448914] [2020-07-20 11:29:36,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 11:29:36,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:36,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 11:29:36,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2020-07-20 11:29:36,448 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 22 states. [2020-07-20 11:29:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:37,191 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-07-20 11:29:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:29:37,192 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-07-20 11:29:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:37,194 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:29:37,194 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 11:29:37,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2020-07-20 11:29:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 11:29:37,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-07-20 11:29:37,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 11:29:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2020-07-20 11:29:37,206 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 45 [2020-07-20 11:29:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:37,207 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2020-07-20 11:29:37,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 11:29:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2020-07-20 11:29:37,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-20 11:29:37,208 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:37,208 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 11:29:37,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:37,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:37,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:37,419 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-07-20 11:29:37,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:37,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215502948] [2020-07-20 11:29:37,420 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 11:29:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:37,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:37,724 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 11:29:37,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:38,060 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:29:38,063 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:29:38,129 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 11:29:38,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215502948] [2020-07-20 11:29:38,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:38,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2020-07-20 11:29:38,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474139702] [2020-07-20 11:29:38,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-20 11:29:38,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:38,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-20 11:29:38,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-07-20 11:29:38,132 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 24 states. [2020-07-20 11:29:39,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:39,161 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2020-07-20 11:29:39,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-20 11:29:39,163 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2020-07-20 11:29:39,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:39,165 INFO L225 Difference]: With dead ends: 89 [2020-07-20 11:29:39,165 INFO L226 Difference]: Without dead ends: 73 [2020-07-20 11:29:39,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 11:29:39,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-07-20 11:29:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2020-07-20 11:29:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-20 11:29:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-20 11:29:39,189 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2020-07-20 11:29:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:39,189 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-20 11:29:39,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-20 11:29:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-20 11:29:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:39,193 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:39,193 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 11:29:39,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:39,395 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-07-20 11:29:39,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:39,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826676037] [2020-07-20 11:29:39,396 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 11:29:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:39,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-20 11:29:39,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:39,775 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 11:29:39,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:40,295 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 11:29:40,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826676037] [2020-07-20 11:29:40,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:40,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2020-07-20 11:29:40,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109699536] [2020-07-20 11:29:40,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-07-20 11:29:40,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-07-20 11:29:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:29:40,297 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 23 states. [2020-07-20 11:29:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:41,264 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2020-07-20 11:29:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:29:41,264 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 57 [2020-07-20 11:29:41,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:41,266 INFO L225 Difference]: With dead ends: 73 [2020-07-20 11:29:41,266 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 11:29:41,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 78 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=1297, Unknown=0, NotChecked=0, Total=1482 [2020-07-20 11:29:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 11:29:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-20 11:29:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 11:29:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2020-07-20 11:29:41,277 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 57 [2020-07-20 11:29:41,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:41,278 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2020-07-20 11:29:41,278 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-07-20 11:29:41,278 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2020-07-20 11:29:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:41,279 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:41,279 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 11:29:41,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:41,493 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:41,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2020-07-20 11:29:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:41,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139092001] [2020-07-20 11:29:41,495 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 11:29:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:41,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 11:29:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:41,855 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 11:29:41,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:42,360 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 11:29:42,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139092001] [2020-07-20 11:29:42,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:42,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 25 [2020-07-20 11:29:42,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923725666] [2020-07-20 11:29:42,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-20 11:29:42,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-20 11:29:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-07-20 11:29:42,363 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand 25 states. [2020-07-20 11:29:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:43,448 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-07-20 11:29:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-20 11:29:43,451 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 57 [2020-07-20 11:29:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:43,452 INFO L225 Difference]: With dead ends: 83 [2020-07-20 11:29:43,453 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 11:29:43,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 79 SyntacticMatches, 14 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2020-07-20 11:29:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 11:29:43,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-20 11:29:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 11:29:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-07-20 11:29:43,463 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 57 [2020-07-20 11:29:43,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:43,464 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-07-20 11:29:43,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-20 11:29:43,464 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-07-20 11:29:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:43,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:43,465 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 11:29:43,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:43,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:43,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:43,674 INFO L82 PathProgramCache]: Analyzing trace with hash 482320829, now seen corresponding path program 1 times [2020-07-20 11:29:43,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:43,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405591156] [2020-07-20 11:29:43,675 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 11:29:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:43,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 11:29:43,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:43,870 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 11:29:43,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:29:44,078 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 11:29:44,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405591156] [2020-07-20 11:29:44,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:29:44,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2020-07-20 11:29:44,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281378114] [2020-07-20 11:29:44,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 11:29:44,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:44,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 11:29:44,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:29:44,080 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-07-20 11:29:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:44,356 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2020-07-20 11:29:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 11:29:44,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-20 11:29:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:44,362 INFO L225 Difference]: With dead ends: 82 [2020-07-20 11:29:44,363 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 11:29:44,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:29:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 11:29:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-20 11:29:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-20 11:29:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-07-20 11:29:44,382 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 57 [2020-07-20 11:29:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:44,382 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-07-20 11:29:44,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 11:29:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-07-20 11:29:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 11:29:44,385 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:44,387 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 11:29:44,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:44,601 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-07-20 11:29:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:44,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042240668] [2020-07-20 11:29:44,603 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 11:29:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:29:44,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-20 11:29:44,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:29:44,870 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 11:29:44,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:29:44,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042240668] [2020-07-20 11:29:44,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:29:44,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-20 11:29:44,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081880112] [2020-07-20 11:29:44,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 11:29:44,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:29:44,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 11:29:44,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-07-20 11:29:44,872 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 15 states. [2020-07-20 11:29:45,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:29:45,330 INFO L93 Difference]: Finished difference Result 93 states and 102 transitions. [2020-07-20 11:29:45,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 11:29:45,330 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-20 11:29:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:29:45,333 INFO L225 Difference]: With dead ends: 93 [2020-07-20 11:29:45,333 INFO L226 Difference]: Without dead ends: 82 [2020-07-20 11:29:45,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-07-20 11:29:45,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-20 11:29:45,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 64. [2020-07-20 11:29:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 11:29:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2020-07-20 11:29:45,344 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2020-07-20 11:29:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:29:45,345 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2020-07-20 11:29:45,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 11:29:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2020-07-20 11:29:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-20 11:29:45,346 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:29:45,346 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:29:45,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:45,562 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:29:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:29:45,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-07-20 11:29:45,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:29:45,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936889320] [2020-07-20 11:29:45,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:29:45,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:29:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:29:45,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:29:45,798 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:29:45,798 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:29:46,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:29:46,071 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-20 11:29:46,072 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2020-07-20 11:29:46,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:29:46 BoogieIcfgContainer [2020-07-20 11:29:46,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:29:46,121 INFO L168 Benchmark]: Toolchain (without parser) took 14969.34 ms. Allocated memory was 142.1 MB in the beginning and 354.9 MB in the end (delta: 212.9 MB). Free memory was 102.8 MB in the beginning and 302.3 MB in the end (delta: -199.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:46,122 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:29:46,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.51 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 102.3 MB in the beginning and 169.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:46,123 INFO L168 Benchmark]: Boogie Preprocessor took 59.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 166.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:46,124 INFO L168 Benchmark]: RCFGBuilder took 579.46 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 120.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:29:46,125 INFO L168 Benchmark]: TraceAbstraction took 13692.85 ms. Allocated memory was 203.4 MB in the beginning and 354.9 MB in the end (delta: 151.5 MB). Free memory was 120.0 MB in the beginning and 302.3 MB in the end (delta: -182.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 11:29:46,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 630.51 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 102.3 MB in the beginning and 169.6 MB in the end (delta: -67.2 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 166.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 579.46 ms. Allocated memory is still 203.4 MB. Free memory was 166.3 MB in the beginning and 120.7 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13692.85 ms. Allocated memory was 203.4 MB in the beginning and 354.9 MB in the end (delta: 151.5 MB). Free memory was 120.0 MB in the beginning and 302.3 MB in the end (delta: -182.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [\old(elem)=12, \old(elem)=11, \old(guard_malloc_counter)=5, \old(guard_malloc_counter)=6, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={2:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={2:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, size=8] [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=2, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={2:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}, head={2:0}, head={2:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] [L6] __VERIFIER_error() VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.5s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 403 SDtfs, 472 SDslu, 1456 SDs, 0 SdLazy, 4266 SolverSat, 536 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 832 GetRequests, 565 SyntacticMatches, 47 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 45 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 11 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 incorrect! Received shutdown request...