/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:10:46,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:10:46,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:10:46,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:10:46,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:10:46,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:10:46,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:10:46,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:10:46,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:10:46,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:10:46,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:10:46,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:10:46,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:10:46,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:10:46,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:10:46,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:10:46,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:10:46,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:10:46,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:10:46,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:10:46,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:10:46,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:10:46,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:10:46,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:10:46,752 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:10:46,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:10:46,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:10:46,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:10:46,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:10:46,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:10:46,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:10:46,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:10:46,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:10:46,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:10:46,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:10:46,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:10:46,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:10:46,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:10:46,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:10:46,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:10:46,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:10:46,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:10:46,813 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:10:46,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:10:46,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:10:46,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:10:46,815 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:10:46,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:10:46,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:10:46,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:10:46,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:10:46,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:10:46,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:10:46,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:10:46,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:10:46,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:10:46,818 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:10:46,818 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:10:46,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:10:46,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:10:46,819 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:10:46,819 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:10:46,819 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:10:46,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:10:46,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:10:46,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:10:46,820 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:10:47,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:10:47,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:10:47,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:10:47,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:10:47,142 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:10:47,143 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-08-19 01:10:47,201 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0da1c648/c38bc8cd263d40378d0b8070472b390e/FLAG16bc7631c [2020-08-19 01:10:47,705 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:10:47,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-08-19 01:10:47,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0da1c648/c38bc8cd263d40378d0b8070472b390e/FLAG16bc7631c [2020-08-19 01:10:47,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0da1c648/c38bc8cd263d40378d0b8070472b390e [2020-08-19 01:10:48,003 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:10:48,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:10:48,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:10:48,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:10:48,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:10:48,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:10:47" (1/1) ... [2020-08-19 01:10:48,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cfd413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48, skipping insertion in model container [2020-08-19 01:10:48,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:10:47" (1/1) ... [2020-08-19 01:10:48,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:10:48,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:10:48,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:10:48,558 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:10:48,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:10:48,666 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:10:48,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48 WrapperNode [2020-08-19 01:10:48,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:10:48,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:10:48,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:10:48,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:10:48,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... [2020-08-19 01:10:48,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:10:48,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:10:48,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:10:48,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:10:48,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:10:48,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:10:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:10:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-19 01:10:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-19 01:10:48,824 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-19 01:10:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-08-19 01:10:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-08-19 01:10:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-08-19 01:10:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-08-19 01:10:48,825 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-08-19 01:10:48,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:10:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:10:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:10:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-19 01:10:48,826 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-19 01:10:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 01:10:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 01:10:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 01:10:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 01:10:48,827 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 01:10:48,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 01:10:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 01:10:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 01:10:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 01:10:48,829 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 01:10:48,830 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 01:10:48,831 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 01:10:48,832 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 01:10:48,833 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 01:10:48,834 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 01:10:48,835 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 01:10:48,836 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 01:10:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 01:10:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 01:10:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 01:10:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 01:10:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-08-19 01:10:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-08-19 01:10:48,843 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-08-19 01:10:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:10:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:10:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 01:10:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:10:48,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:10:49,138 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-19 01:10:49,480 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:10:49,480 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 01:10:49,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:10:49 BoogieIcfgContainer [2020-08-19 01:10:49,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:10:49,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:10:49,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:10:49,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:10:49,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:10:47" (1/3) ... [2020-08-19 01:10:49,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fc39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:10:49, skipping insertion in model container [2020-08-19 01:10:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:10:48" (2/3) ... [2020-08-19 01:10:49,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fc39f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:10:49, skipping insertion in model container [2020-08-19 01:10:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:10:49" (3/3) ... [2020-08-19 01:10:49,496 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-08-19 01:10:49,506 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:10:49,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:10:49,523 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:10:49,543 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:10:49,543 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:10:49,544 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:10:49,544 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:10:49,544 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:10:49,544 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:10:49,544 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:10:49,544 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:10:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-08-19 01:10:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 01:10:49,570 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:49,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:49,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:49,578 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-08-19 01:10:49,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:49,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733684139] [2020-08-19 01:10:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:10:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 01:10:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:10:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 01:10:49,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733684139] [2020-08-19 01:10:49,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:10:49,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:10:49,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103742955] [2020-08-19 01:10:49,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:10:49,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:49,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:10:49,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:10:49,876 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-08-19 01:10:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:50,115 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-08-19 01:10:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:10:50,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-08-19 01:10:50,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:50,128 INFO L225 Difference]: With dead ends: 136 [2020-08-19 01:10:50,128 INFO L226 Difference]: Without dead ends: 58 [2020-08-19 01:10:50,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:10:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-19 01:10:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-08-19 01:10:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-19 01:10:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-08-19 01:10:50,176 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-08-19 01:10:50,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:50,176 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-08-19 01:10:50,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:10:50,177 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-08-19 01:10:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-19 01:10:50,180 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:50,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:50,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:10:50,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-08-19 01:10:50,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:50,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709212770] [2020-08-19 01:10:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 01:10:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 01:10:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:10:50,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709212770] [2020-08-19 01:10:50,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:50,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:10:50,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415103746] [2020-08-19 01:10:50,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:10:50,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:50,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:10:50,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:10:50,444 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-08-19 01:10:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:51,057 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2020-08-19 01:10:51,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:10:51,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-08-19 01:10:51,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:51,063 INFO L225 Difference]: With dead ends: 128 [2020-08-19 01:10:51,063 INFO L226 Difference]: Without dead ends: 91 [2020-08-19 01:10:51,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:10:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-19 01:10:51,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 66. [2020-08-19 01:10:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 01:10:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-08-19 01:10:51,103 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2020-08-19 01:10:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:51,105 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-08-19 01:10:51,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:10:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-08-19 01:10:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:10:51,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:51,109 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:51,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:10:51,109 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:51,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1427384127, now seen corresponding path program 1 times [2020-08-19 01:10:51,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:51,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935414148] [2020-08-19 01:10:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:10:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:10:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:10:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:10:51,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935414148] [2020-08-19 01:10:51,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:51,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:10:51,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880596634] [2020-08-19 01:10:51,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:10:51,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:51,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:10:51,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:10:51,435 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 12 states. [2020-08-19 01:10:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:52,261 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2020-08-19 01:10:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:10:52,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-08-19 01:10:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:52,266 INFO L225 Difference]: With dead ends: 134 [2020-08-19 01:10:52,266 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 01:10:52,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:10:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 01:10:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2020-08-19 01:10:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 01:10:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-08-19 01:10:52,278 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 47 [2020-08-19 01:10:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:52,278 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-08-19 01:10:52,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:10:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-08-19 01:10:52,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-19 01:10:52,280 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:52,280 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:52,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:10:52,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:52,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:52,281 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-08-19 01:10:52,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:52,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290746128] [2020-08-19 01:10:52,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-08-19 01:10:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:10:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:10:52,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290746128] [2020-08-19 01:10:52,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:52,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:10:52,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626727495] [2020-08-19 01:10:52,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:10:52,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:52,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:10:52,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:10:52,464 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 12 states. [2020-08-19 01:10:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:53,039 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2020-08-19 01:10:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:10:53,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-08-19 01:10:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:53,042 INFO L225 Difference]: With dead ends: 132 [2020-08-19 01:10:53,043 INFO L226 Difference]: Without dead ends: 95 [2020-08-19 01:10:53,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:10:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-19 01:10:53,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 70. [2020-08-19 01:10:53,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-08-19 01:10:53,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-08-19 01:10:53,062 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 48 [2020-08-19 01:10:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:53,063 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-08-19 01:10:53,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:10:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-08-19 01:10:53,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 01:10:53,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:53,065 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:53,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:10:53,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:53,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:53,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2083565480, now seen corresponding path program 1 times [2020-08-19 01:10:53,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:53,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684373016] [2020-08-19 01:10:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 01:10:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 01:10:53,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:10:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 01:10:53,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684373016] [2020-08-19 01:10:53,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:53,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:10:53,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46562482] [2020-08-19 01:10:53,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:10:53,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:53,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:10:53,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:10:53,313 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 13 states. [2020-08-19 01:10:54,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:54,040 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2020-08-19 01:10:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:10:54,040 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-08-19 01:10:54,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:54,042 INFO L225 Difference]: With dead ends: 138 [2020-08-19 01:10:54,042 INFO L226 Difference]: Without dead ends: 92 [2020-08-19 01:10:54,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:10:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-19 01:10:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 59. [2020-08-19 01:10:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-08-19 01:10:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-08-19 01:10:54,053 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 51 [2020-08-19 01:10:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:54,053 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-08-19 01:10:54,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:10:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-08-19 01:10:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:10:54,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:54,055 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:54,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:10:54,056 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:54,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:54,056 INFO L82 PathProgramCache]: Analyzing trace with hash -137443652, now seen corresponding path program 2 times [2020-08-19 01:10:54,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:54,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249586908] [2020-08-19 01:10:54,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:54,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:10:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 01:10:54,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249586908] [2020-08-19 01:10:54,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:10:54,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:10:54,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020069847] [2020-08-19 01:10:54,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:10:54,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:54,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:10:54,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:10:54,297 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 12 states. [2020-08-19 01:10:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:54,721 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-08-19 01:10:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:10:54,722 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-08-19 01:10:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:54,723 INFO L225 Difference]: With dead ends: 79 [2020-08-19 01:10:54,723 INFO L226 Difference]: Without dead ends: 75 [2020-08-19 01:10:54,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:10:54,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-19 01:10:54,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-08-19 01:10:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-19 01:10:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-08-19 01:10:54,734 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-08-19 01:10:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:54,735 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-08-19 01:10:54,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:10:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-08-19 01:10:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:10:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:54,736 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:54,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:10:54,737 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 1 times [2020-08-19 01:10:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:54,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234747516] [2020-08-19 01:10:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:10:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 01:10:54,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234747516] [2020-08-19 01:10:54,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:10:54,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:10:54,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443913235] [2020-08-19 01:10:54,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:10:54,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:54,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:10:54,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:10:54,911 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 9 states. [2020-08-19 01:10:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:55,282 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2020-08-19 01:10:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:10:55,282 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-08-19 01:10:55,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:55,284 INFO L225 Difference]: With dead ends: 136 [2020-08-19 01:10:55,284 INFO L226 Difference]: Without dead ends: 95 [2020-08-19 01:10:55,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:10:55,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-19 01:10:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 79. [2020-08-19 01:10:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 01:10:55,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-08-19 01:10:55,308 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 53 [2020-08-19 01:10:55,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:55,308 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-08-19 01:10:55,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:10:55,309 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-08-19 01:10:55,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 01:10:55,310 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:55,310 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:55,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:10:55,316 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-08-19 01:10:55,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:55,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760668440] [2020-08-19 01:10:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:10:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:10:55,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760668440] [2020-08-19 01:10:55,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:55,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:10:55,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845048895] [2020-08-19 01:10:55,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:10:55,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:55,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:10:55,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:10:55,569 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand 15 states. [2020-08-19 01:10:56,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:56,230 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-08-19 01:10:56,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:10:56,233 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-08-19 01:10:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:56,235 INFO L225 Difference]: With dead ends: 96 [2020-08-19 01:10:56,235 INFO L226 Difference]: Without dead ends: 92 [2020-08-19 01:10:56,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:10:56,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-19 01:10:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-08-19 01:10:56,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-19 01:10:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-08-19 01:10:56,246 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 53 [2020-08-19 01:10:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:56,247 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-08-19 01:10:56,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:10:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-08-19 01:10:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 01:10:56,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:56,248 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:56,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:10:56,249 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-08-19 01:10:56,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:56,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091100664] [2020-08-19 01:10:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:10:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-08-19 01:10:56,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091100664] [2020-08-19 01:10:56,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:56,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 01:10:56,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211659987] [2020-08-19 01:10:56,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 01:10:56,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:56,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 01:10:56,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:10:56,613 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 17 states. [2020-08-19 01:10:57,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:57,634 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2020-08-19 01:10:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:10:57,634 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-08-19 01:10:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:57,636 INFO L225 Difference]: With dead ends: 135 [2020-08-19 01:10:57,636 INFO L226 Difference]: Without dead ends: 131 [2020-08-19 01:10:57,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2020-08-19 01:10:57,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-19 01:10:57,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-08-19 01:10:57,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-08-19 01:10:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2020-08-19 01:10:57,666 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 54 [2020-08-19 01:10:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:57,667 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2020-08-19 01:10:57,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 01:10:57,667 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2020-08-19 01:10:57,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 01:10:57,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:57,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:57,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:10:57,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:57,669 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-08-19 01:10:57,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:57,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630597574] [2020-08-19 01:10:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:57,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:57,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:57,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:10:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:10:58,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630597574] [2020-08-19 01:10:58,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:58,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 01:10:58,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121328327] [2020-08-19 01:10:58,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 01:10:58,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 01:10:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:10:58,053 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand 17 states. [2020-08-19 01:10:58,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:10:58,998 INFO L93 Difference]: Finished difference Result 137 states and 173 transitions. [2020-08-19 01:10:58,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:10:59,000 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-08-19 01:10:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:10:59,001 INFO L225 Difference]: With dead ends: 137 [2020-08-19 01:10:59,001 INFO L226 Difference]: Without dead ends: 127 [2020-08-19 01:10:59,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:10:59,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-19 01:10:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-08-19 01:10:59,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-08-19 01:10:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2020-08-19 01:10:59,016 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 55 [2020-08-19 01:10:59,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:10:59,016 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2020-08-19 01:10:59,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 01:10:59,016 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2020-08-19 01:10:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:10:59,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:10:59,018 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:10:59,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:10:59,018 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:10:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:10:59,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-08-19 01:10:59,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:10:59,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500240905] [2020-08-19 01:10:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:10:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:10:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:10:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:10:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:10:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-19 01:10:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:10:59,203 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-08-19 01:10:59,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500240905] [2020-08-19 01:10:59,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:10:59,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:10:59,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814346949] [2020-08-19 01:10:59,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:10:59,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:10:59,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:10:59,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:10:59,206 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand 12 states. [2020-08-19 01:11:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:11:00,090 INFO L93 Difference]: Finished difference Result 225 states and 300 transitions. [2020-08-19 01:11:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:11:00,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 01:11:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:11:00,092 INFO L225 Difference]: With dead ends: 225 [2020-08-19 01:11:00,092 INFO L226 Difference]: Without dead ends: 161 [2020-08-19 01:11:00,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-08-19 01:11:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-19 01:11:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2020-08-19 01:11:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 01:11:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2020-08-19 01:11:00,116 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 57 [2020-08-19 01:11:00,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:11:00,117 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2020-08-19 01:11:00,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:11:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2020-08-19 01:11:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:11:00,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:11:00,118 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:11:00,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:11:00,119 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:11:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:11:00,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-08-19 01:11:00,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:11:00,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222804936] [2020-08-19 01:11:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:11:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:11:00,141 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:11:00,141 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:11:00,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:11:00,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:11:00 BoogieIcfgContainer [2020-08-19 01:11:00,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:11:00,170 INFO L168 Benchmark]: Toolchain (without parser) took 12164.17 ms. Allocated memory was 138.9 MB in the beginning and 362.8 MB in the end (delta: 223.9 MB). Free memory was 100.8 MB in the beginning and 278.7 MB in the end (delta: -177.9 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:11:00,170 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:11:00,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 662.21 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 168.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:11:00,172 INFO L168 Benchmark]: Boogie Preprocessor took 82.13 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 165.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:11:00,173 INFO L168 Benchmark]: RCFGBuilder took 737.54 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 114.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:11:00,173 INFO L168 Benchmark]: TraceAbstraction took 10677.64 ms. Allocated memory was 203.4 MB in the beginning and 362.8 MB in the end (delta: 159.4 MB). Free memory was 114.3 MB in the beginning and 278.7 MB in the end (delta: -164.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:11:00,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 662.21 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.6 MB in the beginning and 168.9 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.13 ms. Allocated memory is still 203.4 MB. Free memory was 168.9 MB in the beginning and 165.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.54 ms. Allocated memory is still 203.4 MB. Free memory was 165.6 MB in the beginning and 114.3 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10677.64 ms. Allocated memory was 203.4 MB in the beginning and 362.8 MB in the end (delta: 159.4 MB). Free memory was 114.3 MB in the beginning and 278.7 MB in the end (delta: -164.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.6s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 685 SDtfs, 856 SDslu, 3907 SDs, 0 SdLazy, 4775 SolverSat, 414 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 329 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 237 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 136172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 79/159 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...