/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:30:56,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:30:56,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:30:56,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:30:56,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:30:56,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:30:56,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:30:56,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:30:56,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:30:56,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:30:56,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:30:56,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:30:56,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:30:56,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:30:56,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:30:56,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:30:56,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:30:56,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:30:56,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:30:56,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:30:56,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:30:56,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:30:56,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:30:56,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:30:56,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:30:56,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:30:56,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:30:56,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:30:56,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:30:56,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:30:56,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:30:56,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:30:56,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:30:56,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:30:56,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:30:56,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:30:56,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:30:56,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:30:56,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:30:56,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:30:56,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:30:56,711 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 [2020-07-19 21:30:56,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:30:56,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:30:56,737 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:30:56,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:30:56,738 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:30:56,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:30:56,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:30:56,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:30:56,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:30:56,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:30:56,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:30:56,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:30:56,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:30:56,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:30:56,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:30:56,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:30:56,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:30:56,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:30:56,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:30:56,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:30:56,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:30:56,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:30:56,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:30:56,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:30:56,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:30:56,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:30:56,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:30:56,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:30:56,745 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:30:56,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:30:57,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:30:57,077 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:30:57,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:30:57,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:30:57,082 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:30:57,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-19 21:30:57,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f923a9e40/7331640f766e410aaed8febf895b7c0e/FLAGffdad4919 [2020-07-19 21:30:57,775 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:30:57,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-19 21:30:57,789 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f923a9e40/7331640f766e410aaed8febf895b7c0e/FLAGffdad4919 [2020-07-19 21:30:58,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f923a9e40/7331640f766e410aaed8febf895b7c0e [2020-07-19 21:30:58,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:30:58,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:30:58,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:58,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:30:58,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:30:58,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521ff22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58, skipping insertion in model container [2020-07-19 21:30:58,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:30:58,117 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:30:58,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:58,561 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:30:58,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:58,681 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:30:58,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58 WrapperNode [2020-07-19 21:30:58,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:58,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:30:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:30:58,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:30:58,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (1/1) ... [2020-07-19 21:30:58,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:30:58,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:30:58,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:30:58,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:30:58,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (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 [2020-07-19 21:30:58,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:30:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:30:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-19 21:30:58,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-19 21:30:58,816 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-19 21:30:58,816 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-19 21:30:58,817 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-19 21:30:58,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:30:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:30:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-19 21:30:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-19 21:30:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-19 21:30:58,817 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-19 21:30:58,818 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-19 21:30:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-19 21:30:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-19 21:30:58,819 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-19 21:30:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-19 21:30:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-19 21:30:58,820 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-19 21:30:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-19 21:30:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-19 21:30:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-19 21:30:58,822 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-19 21:30:58,823 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-19 21:30:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-19 21:30:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-19 21:30:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-19 21:30:58,824 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-19 21:30:58,825 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-19 21:30:58,826 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-19 21:30:58,827 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-19 21:30:58,828 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-19 21:30:58,829 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-19 21:30:58,830 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-19 21:30:58,831 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-19 21:30:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-19 21:30:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-19 21:30:58,834 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-19 21:30:58,835 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-19 21:30:58,836 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-19 21:30:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-19 21:30:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-19 21:30:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-19 21:30:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:30:58,837 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-19 21:30:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-19 21:30:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-19 21:30:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-19 21:30:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:30:58,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:30:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:30:58,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-19 21:30:58,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:30:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-19 21:30:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-19 21:30:58,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:30:59,390 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:30:59,390 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-19 21:30:59,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:59 BoogieIcfgContainer [2020-07-19 21:30:59,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:30:59,397 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:30:59,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:30:59,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:30:59,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:58" (1/3) ... [2020-07-19 21:30:59,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b846d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:59, skipping insertion in model container [2020-07-19 21:30:59,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:58" (2/3) ... [2020-07-19 21:30:59,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b846d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:59, skipping insertion in model container [2020-07-19 21:30:59,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:59" (3/3) ... [2020-07-19 21:30:59,405 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-19 21:30:59,417 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:30:59,425 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:30:59,440 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:30:59,463 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:30:59,464 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:30:59,464 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:30:59,464 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:30:59,465 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:30:59,465 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:30:59,465 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:30:59,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:30:59,486 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-19 21:30:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-19 21:30:59,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:59,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:59,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:59,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1135050545, now seen corresponding path program 1 times [2020-07-19 21:30:59,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:59,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663176124] [2020-07-19 21:30:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:30:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:59,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663176124] [2020-07-19 21:30:59,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:59,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-19 21:30:59,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632743329] [2020-07-19 21:30:59,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-19 21:30:59,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:59,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-19 21:30:59,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-19 21:30:59,921 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 7 states. [2020-07-19 21:31:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:00,503 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2020-07-19 21:31:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:31:00,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-07-19 21:31:00,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:00,523 INFO L225 Difference]: With dead ends: 88 [2020-07-19 21:31:00,523 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 21:31:00,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-19 21:31:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 21:31:00,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-19 21:31:00,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-19 21:31:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-07-19 21:31:00,620 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 13 [2020-07-19 21:31:00,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:00,620 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-07-19 21:31:00,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-19 21:31:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-07-19 21:31:00,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 21:31:00,637 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:00,637 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] [2020-07-19 21:31:00,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:31:00,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:00,642 INFO L82 PathProgramCache]: Analyzing trace with hash -925661111, now seen corresponding path program 1 times [2020-07-19 21:31:00,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:00,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641689736] [2020-07-19 21:31:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:00,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 21:31:01,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641689736] [2020-07-19 21:31:01,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999188869] [2020-07-19 21:31:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-19 21:31:01,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 21:31:01,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:01,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2020-07-19 21:31:01,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882524158] [2020-07-19 21:31:01,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 21:31:01,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:01,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 21:31:01,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:31:01,306 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2020-07-19 21:31:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:01,580 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2020-07-19 21:31:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:31:01,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-19 21:31:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:01,583 INFO L225 Difference]: With dead ends: 69 [2020-07-19 21:31:01,583 INFO L226 Difference]: Without dead ends: 48 [2020-07-19 21:31:01,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:31:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-19 21:31:01,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-19 21:31:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-19 21:31:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-07-19 21:31:01,598 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 38 [2020-07-19 21:31:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:01,598 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-07-19 21:31:01,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 21:31:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-07-19 21:31:01,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 21:31:01,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:01,600 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] [2020-07-19 21:31:01,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-19 21:31:01,814 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:01,815 INFO L82 PathProgramCache]: Analyzing trace with hash -894641304, now seen corresponding path program 1 times [2020-07-19 21:31:01,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:01,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794758174] [2020-07-19 21:31:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 21:31:02,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794758174] [2020-07-19 21:31:02,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:31:02,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-19 21:31:02,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276195508] [2020-07-19 21:31:02,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-19 21:31:02,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:02,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-19 21:31:02,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:31:02,008 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 9 states. [2020-07-19 21:31:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:02,191 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-07-19 21:31:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:31:02,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-07-19 21:31:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:02,193 INFO L225 Difference]: With dead ends: 67 [2020-07-19 21:31:02,193 INFO L226 Difference]: Without dead ends: 43 [2020-07-19 21:31:02,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-19 21:31:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-19 21:31:02,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-07-19 21:31:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-19 21:31:02,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-07-19 21:31:02,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 38 [2020-07-19 21:31:02,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:02,204 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-07-19 21:31:02,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-19 21:31:02,204 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-07-19 21:31:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-19 21:31:02,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:02,205 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] [2020-07-19 21:31:02,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:31:02,206 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:02,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:02,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1188044311, now seen corresponding path program 1 times [2020-07-19 21:31:02,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:02,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090972803] [2020-07-19 21:31:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 21:31:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090972803] [2020-07-19 21:31:02,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57194945] [2020-07-19 21:31:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:02,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-19 21:31:02,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:02,993 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-19 21:31:02,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 21:31:02,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14] total 26 [2020-07-19 21:31:02,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959177232] [2020-07-19 21:31:02,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-19 21:31:02,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:02,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-19 21:31:02,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-07-19 21:31:02,997 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 13 states. [2020-07-19 21:31:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:03,561 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2020-07-19 21:31:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-19 21:31:03,561 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-07-19 21:31:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:03,564 INFO L225 Difference]: With dead ends: 71 [2020-07-19 21:31:03,564 INFO L226 Difference]: Without dead ends: 60 [2020-07-19 21:31:03,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=169, Invalid=1091, Unknown=0, NotChecked=0, Total=1260 [2020-07-19 21:31:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-19 21:31:03,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-07-19 21:31:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-19 21:31:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-07-19 21:31:03,576 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 38 [2020-07-19 21:31:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:03,576 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-07-19 21:31:03,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-19 21:31:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-07-19 21:31:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:31:03,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:03,578 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] [2020-07-19 21:31:03,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:03,781 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1335597358, now seen corresponding path program 1 times [2020-07-19 21:31:03,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:03,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267493108] [2020-07-19 21:31:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:31:04,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267493108] [2020-07-19 21:31:04,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126426252] [2020-07-19 21:31:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:04,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 21:31:04,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:31:04,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:04,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 29 [2020-07-19 21:31:04,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44200360] [2020-07-19 21:31:04,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-19 21:31:04,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-19 21:31:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-07-19 21:31:04,609 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 29 states. [2020-07-19 21:31:05,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:05,848 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2020-07-19 21:31:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-19 21:31:05,848 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 45 [2020-07-19 21:31:05,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:05,851 INFO L225 Difference]: With dead ends: 65 [2020-07-19 21:31:05,851 INFO L226 Difference]: Without dead ends: 58 [2020-07-19 21:31:05,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-07-19 21:31:05,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-19 21:31:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-07-19 21:31:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-19 21:31:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-07-19 21:31:05,864 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 45 [2020-07-19 21:31:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:05,865 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-07-19 21:31:05,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-19 21:31:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-07-19 21:31:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-19 21:31:05,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:05,866 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] [2020-07-19 21:31:06,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:06,081 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:06,081 INFO L82 PathProgramCache]: Analyzing trace with hash 526250732, now seen corresponding path program 1 times [2020-07-19 21:31:06,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:06,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655843056] [2020-07-19 21:31:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-19 21:31:06,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655843056] [2020-07-19 21:31:06,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133495826] [2020-07-19 21:31:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:06,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 21:31:06,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:31:06,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:06,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2020-07-19 21:31:06,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961759540] [2020-07-19 21:31:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-07-19 21:31:06,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-07-19 21:31:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2020-07-19 21:31:06,844 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 28 states. [2020-07-19 21:31:07,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:07,830 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-07-19 21:31:07,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-19 21:31:07,830 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 45 [2020-07-19 21:31:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:07,833 INFO L225 Difference]: With dead ends: 65 [2020-07-19 21:31:07,833 INFO L226 Difference]: Without dead ends: 62 [2020-07-19 21:31:07,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2020-07-19 21:31:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-19 21:31:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2020-07-19 21:31:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-19 21:31:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-07-19 21:31:07,845 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 45 [2020-07-19 21:31:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:07,846 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-07-19 21:31:07,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-07-19 21:31:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-07-19 21:31:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 21:31:07,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:07,847 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] [2020-07-19 21:31:08,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:08,057 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:08,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2119488644, now seen corresponding path program 1 times [2020-07-19 21:31:08,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:08,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519430159] [2020-07-19 21:31:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,463 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 21:31:08,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519430159] [2020-07-19 21:31:08,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155782334] [2020-07-19 21:31:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:08,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-19 21:31:08,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:31:08,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:08,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 31 [2020-07-19 21:31:08,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503914464] [2020-07-19 21:31:08,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-19 21:31:08,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:08,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-19 21:31:08,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-07-19 21:31:08,954 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 31 states. [2020-07-19 21:31:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:10,187 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-07-19 21:31:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-19 21:31:10,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-19 21:31:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:10,190 INFO L225 Difference]: With dead ends: 66 [2020-07-19 21:31:10,190 INFO L226 Difference]: Without dead ends: 60 [2020-07-19 21:31:10,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=245, Invalid=2011, Unknown=0, NotChecked=0, Total=2256 [2020-07-19 21:31:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-19 21:31:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-07-19 21:31:10,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-19 21:31:10,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2020-07-19 21:31:10,203 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 57 [2020-07-19 21:31:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:10,204 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2020-07-19 21:31:10,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-19 21:31:10,204 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2020-07-19 21:31:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 21:31:10,205 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:10,205 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] [2020-07-19 21:31:10,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-07-19 21:31:10,412 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:10,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:10,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1366132026, now seen corresponding path program 1 times [2020-07-19 21:31:10,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:10,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208377677] [2020-07-19 21:31:10,414 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-19 21:31:10,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208377677] [2020-07-19 21:31:10,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821107509] [2020-07-19 21:31:10,881 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:11,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-19 21:31:11,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:11,288 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-19 21:31:11,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:11,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 31 [2020-07-19 21:31:11,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469097898] [2020-07-19 21:31:11,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-07-19 21:31:11,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:11,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-07-19 21:31:11,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-07-19 21:31:11,291 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand 31 states. [2020-07-19 21:31:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:12,368 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-07-19 21:31:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-19 21:31:12,369 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 57 [2020-07-19 21:31:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:12,370 INFO L225 Difference]: With dead ends: 63 [2020-07-19 21:31:12,371 INFO L226 Difference]: Without dead ends: 49 [2020-07-19 21:31:12,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=1827, Unknown=0, NotChecked=0, Total=2070 [2020-07-19 21:31:12,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-19 21:31:12,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-07-19 21:31:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 21:31:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-07-19 21:31:12,380 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 57 [2020-07-19 21:31:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:12,380 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-07-19 21:31:12,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-07-19 21:31:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-07-19 21:31:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 21:31:12,381 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:12,382 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] [2020-07-19 21:31:12,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:12,596 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:12,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:12,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1588672638, now seen corresponding path program 1 times [2020-07-19 21:31:12,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:12,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690510431] [2020-07-19 21:31:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 21:31:12,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690510431] [2020-07-19 21:31:12,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426132709] [2020-07-19 21:31:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:12,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-19 21:31:12,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:13,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 21:31:13,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-19 21:31:13,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [18] total 26 [2020-07-19 21:31:13,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036089103] [2020-07-19 21:31:13,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-19 21:31:13,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:13,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-19 21:31:13,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-07-19 21:31:13,191 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 15 states. [2020-07-19 21:31:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:13,717 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-07-19 21:31:13,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-19 21:31:13,717 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-19 21:31:13,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:13,718 INFO L225 Difference]: With dead ends: 60 [2020-07-19 21:31:13,719 INFO L226 Difference]: Without dead ends: 52 [2020-07-19 21:31:13,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2020-07-19 21:31:13,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-07-19 21:31:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2020-07-19 21:31:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 21:31:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-07-19 21:31:13,728 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 57 [2020-07-19 21:31:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:13,729 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-07-19 21:31:13,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-19 21:31:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-07-19 21:31:13,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-19 21:31:13,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:31:13,730 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] [2020-07-19 21:31:13,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:13,944 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:31:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:31:13,945 INFO L82 PathProgramCache]: Analyzing trace with hash 779326012, now seen corresponding path program 1 times [2020-07-19 21:31:13,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:31:13,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322407026] [2020-07-19 21:31:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 [2020-07-19 21:31:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-19 21:31:14,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322407026] [2020-07-19 21:31:14,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578386809] [2020-07-19 21:31:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@40a44eb4 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-19 21:31:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:31:14,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-19 21:31:14,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-19 21:31:14,369 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-19 21:31:14,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-19 21:31:14,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-07-19 21:31:14,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033205497] [2020-07-19 21:31:14,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-19 21:31:14,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:31:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-19 21:31:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-19 21:31:14,372 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 11 states. [2020-07-19 21:31:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:31:14,694 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-07-19 21:31:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-19 21:31:14,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-07-19 21:31:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:31:14,695 INFO L225 Difference]: With dead ends: 47 [2020-07-19 21:31:14,696 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:31:14,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-07-19 21:31:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:31:14,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:31:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:31:14,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:31:14,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2020-07-19 21:31:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:31:14,698 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:31:14,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-19 21:31:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:31:14,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:31:14,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-07-19 21:31:14,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:31:16,025 INFO L268 CegarLoopResult]: For program point my_mallocFINAL(lines 878 880) no Hoare annotation was computed. [2020-07-19 21:31:16,026 INFO L264 CegarLoopResult]: At program point L879(line 879) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= 8 my_malloc_~size) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-19 21:31:16,026 INFO L268 CegarLoopResult]: For program point L879-1(line 879) no Hoare annotation was computed. [2020-07-19 21:31:16,026 INFO L264 CegarLoopResult]: At program point my_mallocENTRY(lines 878 880) the Hoare annotation is: (or (not (= 8 |my_malloc_#in~size|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|))) [2020-07-19 21:31:16,026 INFO L268 CegarLoopResult]: For program point my_mallocEXIT(lines 878 880) no Hoare annotation was computed. [2020-07-19 21:31:16,026 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:31:16,027 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|) (= |old(~elem~0.base)| ~elem~0.base) (= |~#head~0.offset| |old(~#head~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) [2020-07-19 21:31:16,027 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:31:16,027 INFO L268 CegarLoopResult]: For program point L896(lines 896 897) no Hoare annotation was computed. [2020-07-19 21:31:16,027 INFO L268 CegarLoopResult]: For program point L896-2(lines 895 898) no Hoare annotation was computed. [2020-07-19 21:31:16,027 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 895 898) no Hoare annotation was computed. [2020-07-19 21:31:16,027 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 895 898) the Hoare annotation is: (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) [2020-07-19 21:31:16,028 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 889 893) the Hoare annotation is: (let ((.cse0 (and (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)))) (and (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (not (<= 1 ~guard_malloc_counter~0.offset))) (or .cse0 (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|))))) [2020-07-19 21:31:16,028 INFO L268 CegarLoopResult]: For program point L891(lines 891 892) no Hoare annotation was computed. [2020-07-19 21:31:16,028 INFO L268 CegarLoopResult]: For program point L890(line 890) no Hoare annotation was computed. [2020-07-19 21:31:16,028 INFO L268 CegarLoopResult]: For program point L891-2(lines 889 893) no Hoare annotation was computed. [2020-07-19 21:31:16,028 INFO L264 CegarLoopResult]: At program point L890-2(line 890) the Hoare annotation is: (and (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) (or (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) (not (<= 1 ~guard_malloc_counter~0.offset)))) [2020-07-19 21:31:16,028 INFO L268 CegarLoopResult]: For program point L890-3(line 890) no Hoare annotation was computed. [2020-07-19 21:31:16,028 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 889 893) no Hoare annotation was computed. [2020-07-19 21:31:16,029 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-07-19 21:31:16,029 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-19 21:31:16,029 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-19 21:31:16,029 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-19 21:31:16,029 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:31:16,029 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 0 ~elem~0.offset) (<= 0 ~guard_malloc_counter~0.offset)) [2020-07-19 21:31:16,030 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:31:16,030 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:31:16,030 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 902 917) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0))) [2020-07-19 21:31:16,030 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 902 917) no Hoare annotation was computed. [2020-07-19 21:31:16,030 INFO L264 CegarLoopResult]: At program point L909(line 909) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 (<= 2 main_~dev2~0.offset) (<= ~elem~0.offset 0)))) [2020-07-19 21:31:16,030 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 902 917) no Hoare annotation was computed. [2020-07-19 21:31:16,031 INFO L264 CegarLoopResult]: At program point L908(line 908) the Hoare annotation is: (let ((.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset)) (.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse3 (<= 2 main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 .cse3 (= main_~dev2~0.offset ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)) (and .cse0 .cse1 .cse2 (<= (+ ~elem~0.offset 1) main_~dev2~0.offset)) (and .cse0 .cse3 (<= ~elem~0.offset 0)))) [2020-07-19 21:31:16,031 INFO L264 CegarLoopResult]: At program point L907(line 907) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (not (= |old(~elem~0.offset)| 0))) [2020-07-19 21:31:16,031 INFO L268 CegarLoopResult]: For program point L906(lines 906 915) no Hoare annotation was computed. [2020-07-19 21:31:16,031 INFO L264 CegarLoopResult]: At program point L907-1(line 907) the Hoare annotation is: (let ((.cse0 (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset)) (.cse1 (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset)) (.cse2 (<= (+ main_~dev1~0.offset 1) main_~dev2~0.offset))) (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and .cse0 (<= 1 main_~dev1~0.offset) .cse1 .cse2 (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base)) (and .cse0 (= main_~dev2~0.base ~elem~0.base) .cse1 .cse2 (<= 2 main_~dev2~0.offset) (= main_~dev2~0.offset ~elem~0.offset)) (not (= |old(~elem~0.offset)| 0)))) [2020-07-19 21:31:16,031 INFO L264 CegarLoopResult]: At program point L905(line 905) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= 0 main_~dev1~0.base) (= 0 main_~dev1~0.offset)) (not (= |old(~elem~0.offset)| 0)) (and (<= (+ |old(~guard_malloc_counter~0.offset)| 1) ~guard_malloc_counter~0.offset) (<= 1 main_~dev1~0.offset) (<= main_~dev1~0.offset ~guard_malloc_counter~0.offset) (= |old(~elem~0.offset)| ~elem~0.offset) (= |old(~elem~0.base)| ~elem~0.base))) [2020-07-19 21:31:16,032 INFO L268 CegarLoopResult]: For program point L906-1(lines 906 915) no Hoare annotation was computed. [2020-07-19 21:31:16,032 INFO L264 CegarLoopResult]: At program point L904(line 904) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= |old(~elem~0.offset)| ~elem~0.offset) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= |old(~elem~0.base)| ~elem~0.base) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= |old(~elem~0.offset)| 0))) [2020-07-19 21:31:16,032 INFO L268 CegarLoopResult]: For program point L905-1(line 905) no Hoare annotation was computed. [2020-07-19 21:31:16,032 INFO L268 CegarLoopResult]: For program point L904-1(line 904) no Hoare annotation was computed. [2020-07-19 21:31:16,032 INFO L264 CegarLoopResult]: At program point __getMemoryENTRY(lines 869 876) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (and (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|) (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|)) (not (= 8 |__getMemory_#in~size|)) (not (= 0 ~elem~0.offset))) [2020-07-19 21:31:16,032 INFO L268 CegarLoopResult]: For program point __getMemoryEXIT(lines 869 876) no Hoare annotation was computed. [2020-07-19 21:31:16,033 INFO L268 CegarLoopResult]: For program point __getMemoryFINAL(lines 869 876) no Hoare annotation was computed. [2020-07-19 21:31:16,033 INFO L268 CegarLoopResult]: For program point L873(lines 873 874) no Hoare annotation was computed. [2020-07-19 21:31:16,033 INFO L268 CegarLoopResult]: For program point L871(line 871) no Hoare annotation was computed. [2020-07-19 21:31:16,033 INFO L264 CegarLoopResult]: At program point L871-2(line 871) the Hoare annotation is: (or (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (= 8 |__getMemory_#in~size|)) (not (= 0 ~elem~0.offset))) [2020-07-19 21:31:16,033 INFO L268 CegarLoopResult]: For program point L871-3(line 871) no Hoare annotation was computed. [2020-07-19 21:31:16,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:31:16 BoogieIcfgContainer [2020-07-19 21:31:16,040 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:31:16,043 INFO L168 Benchmark]: Toolchain (without parser) took 17992.51 ms. Allocated memory was 134.7 MB in the beginning and 434.1 MB in the end (delta: 299.4 MB). Free memory was 98.0 MB in the beginning and 149.5 MB in the end (delta: -51.5 MB). Peak memory consumption was 247.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,044 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 630.82 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 97.6 MB in the beginning and 163.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,045 INFO L168 Benchmark]: Boogie Preprocessor took 56.91 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 160.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,046 INFO L168 Benchmark]: RCFGBuilder took 655.25 ms. Allocated memory is still 198.7 MB. Free memory was 160.2 MB in the beginning and 115.1 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,047 INFO L168 Benchmark]: TraceAbstraction took 16643.65 ms. Allocated memory was 198.7 MB in the beginning and 434.1 MB in the end (delta: 235.4 MB). Free memory was 114.4 MB in the beginning and 149.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 200.3 MB. Max. memory is 7.1 GB. [2020-07-19 21:31:16,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 630.82 ms. Allocated memory was 134.7 MB in the beginning and 198.7 MB in the end (delta: 64.0 MB). Free memory was 97.6 MB in the beginning and 163.1 MB in the end (delta: -65.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.91 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 160.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 655.25 ms. Allocated memory is still 198.7 MB. Free memory was 160.2 MB in the beginning and 115.1 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16643.65 ms. Allocated memory was 198.7 MB in the beginning and 434.1 MB in the end (delta: 235.4 MB). Free memory was 114.4 MB in the beginning and 149.5 MB in the end (delta: -35.1 MB). Peak memory consumption was 200.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.4s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 349 SDtfs, 497 SDslu, 1066 SDs, 0 SdLazy, 4544 SolverSat, 463 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 721 GetRequests, 437 SyntacticMatches, 6 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 44 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 73 PreInvPairs, 84 NumberOfFragments, 426 HoareAnnotationTreeSize, 73 FomulaSimplifications, 2261 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 1252 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 839 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 821 ConstructedInterpolants, 0 QuantifiedInterpolants, 161323 SizeOfPredicates, 49 NumberOfNonLiveVariables, 2263 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 182/275 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...