/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:35:59,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:35:59,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:35:59,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:35:59,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:35:59,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:35:59,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:35:59,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:35:59,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:35:59,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:35:59,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:35:59,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:35:59,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:35:59,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:35:59,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:35:59,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:35:59,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:35:59,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:35:59,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:35:59,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:35:59,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:35:59,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:35:59,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:35:59,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:35:59,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:35:59,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:35:59,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:35:59,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:35:59,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:35:59,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:35:59,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:35:59,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:35:59,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:35:59,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:35:59,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:35:59,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:35:59,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:35:59,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:35:59,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:35:59,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:35:59,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:35:59,744 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 03:35:59,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:35:59,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:35:59,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:35:59,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:35:59,782 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:35:59,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:35:59,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:35:59,782 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:35:59,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:35:59,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:35:59,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:35:59,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:35:59,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:35:59,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:35:59,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:35:59,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:35:59,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:35:59,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:35:59,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:35:59,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:35:59,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:35:59,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:35:59,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:35:59,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:35:59,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:35:59,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:35:59,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:35:59,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:35:59,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:35:59,789 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:36:00,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:36:00,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:36:00,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:36:00,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:36:00,121 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:36:00,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-19 03:36:00,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85c229e8/ce15fb56c45e4c38b774515b60f3ec35/FLAG2c8386f9d [2020-08-19 03:36:00,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:36:00,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-19 03:36:00,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85c229e8/ce15fb56c45e4c38b774515b60f3ec35/FLAG2c8386f9d [2020-08-19 03:36:01,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a85c229e8/ce15fb56c45e4c38b774515b60f3ec35 [2020-08-19 03:36:01,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:36:01,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:36:01,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:36:01,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:36:01,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:36:01,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fb4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01, skipping insertion in model container [2020-08-19 03:36:01,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:36:01,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:36:01,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:36:01,591 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:36:01,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:36:01,698 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:36:01,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01 WrapperNode [2020-08-19 03:36:01,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:36:01,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:36:01,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:36:01,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:36:01,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (1/1) ... [2020-08-19 03:36:01,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:36:01,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:36:01,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:36:01,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:36:01,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (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 03:36:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:36:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:36:01,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:36:01,836 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 03:36:01,837 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 03:36:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 03:36:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 03:36:01,840 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 03:36:01,841 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 03:36:01,842 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 03:36:01,843 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 03:36:01,844 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 03:36:01,845 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:36:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 03:36:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 03:36:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 03:36:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 03:36:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 03:36:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 03:36:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 03:36:01,849 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 03:36:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 03:36:01,851 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 03:36:01,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:36:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:36:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:36:01,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:36:02,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:36:02,545 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-19 03:36:02,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:36:02 BoogieIcfgContainer [2020-08-19 03:36:02,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:36:02,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:36:02,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:36:02,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:36:02,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:36:01" (1/3) ... [2020-08-19 03:36:02,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ef7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:36:02, skipping insertion in model container [2020-08-19 03:36:02,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:36:01" (2/3) ... [2020-08-19 03:36:02,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56ef7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:36:02, skipping insertion in model container [2020-08-19 03:36:02,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:36:02" (3/3) ... [2020-08-19 03:36:02,568 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-19 03:36:02,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:36:02,589 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-19 03:36:02,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-19 03:36:02,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:36:02,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:36:02,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:36:02,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:36:02,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:36:02,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:36:02,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:36:02,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:36:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-19 03:36:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 03:36:02,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:02,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:02,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-08-19 03:36:02,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:02,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779789091] [2020-08-19 03:36:02,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:02,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:02,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:02,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779789091] [2020-08-19 03:36:02,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:02,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:02,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644791490] [2020-08-19 03:36:02,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:02,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:02,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:02,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:02,918 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-19 03:36:03,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:03,202 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-08-19 03:36:03,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:03,204 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 03:36:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:03,217 INFO L225 Difference]: With dead ends: 186 [2020-08-19 03:36:03,217 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 03:36:03,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 03:36:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-08-19 03:36:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 03:36:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-19 03:36:03,272 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-08-19 03:36:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:03,272 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-19 03:36:03,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-19 03:36:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:03,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:03,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:03,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:36:03,274 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:03,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-08-19 03:36:03,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:03,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259552216] [2020-08-19 03:36:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:03,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259552216] [2020-08-19 03:36:03,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:03,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:03,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690654751] [2020-08-19 03:36:03,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:03,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:03,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:03,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:03,393 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-08-19 03:36:03,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:03,561 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-08-19 03:36:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:03,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-19 03:36:03,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:03,563 INFO L225 Difference]: With dead ends: 84 [2020-08-19 03:36:03,563 INFO L226 Difference]: Without dead ends: 82 [2020-08-19 03:36:03,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-19 03:36:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-08-19 03:36:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-19 03:36:03,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-08-19 03:36:03,575 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-08-19 03:36:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:03,576 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-08-19 03:36:03,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-08-19 03:36:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:03,577 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:03,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:03,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:36:03,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:03,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-08-19 03:36:03,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:03,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164785059] [2020-08-19 03:36:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:03,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1164785059] [2020-08-19 03:36:03,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:03,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:03,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395531499] [2020-08-19 03:36:03,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:03,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:03,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:03,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:03,650 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-08-19 03:36:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:03,852 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-08-19 03:36:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:36:03,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 03:36:03,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:03,854 INFO L225 Difference]: With dead ends: 138 [2020-08-19 03:36:03,854 INFO L226 Difference]: Without dead ends: 136 [2020-08-19 03:36:03,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-19 03:36:03,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-08-19 03:36:03,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-19 03:36:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-08-19 03:36:03,865 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-08-19 03:36:03,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:03,865 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-08-19 03:36:03,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-08-19 03:36:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 03:36:03,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:03,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:03,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:36:03,867 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-08-19 03:36:03,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:03,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788926023] [2020-08-19 03:36:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:03,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788926023] [2020-08-19 03:36:03,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:03,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:03,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348700194] [2020-08-19 03:36:03,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:03,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:03,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:03,984 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-08-19 03:36:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:04,170 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-08-19 03:36:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:04,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 03:36:04,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:04,172 INFO L225 Difference]: With dead ends: 84 [2020-08-19 03:36:04,172 INFO L226 Difference]: Without dead ends: 82 [2020-08-19 03:36:04,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-19 03:36:04,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-19 03:36:04,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 03:36:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-08-19 03:36:04,190 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-08-19 03:36:04,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:04,190 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-08-19 03:36:04,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-08-19 03:36:04,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:36:04,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:04,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:04,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:36:04,193 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:04,193 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-08-19 03:36:04,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:04,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560167245] [2020-08-19 03:36:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:04,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560167245] [2020-08-19 03:36:04,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095214280] [2020-08-19 03:36:04,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:04,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:04,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:04,304 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-08-19 03:36:04,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:04,506 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-08-19 03:36:04,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:04,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 03:36:04,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:04,508 INFO L225 Difference]: With dead ends: 199 [2020-08-19 03:36:04,508 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 03:36:04,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 03:36:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-08-19 03:36:04,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 03:36:04,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-19 03:36:04,517 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-08-19 03:36:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:04,517 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-19 03:36:04,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:04,518 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-19 03:36:04,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:36:04,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:04,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:04,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:36:04,519 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:04,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:04,519 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-08-19 03:36:04,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:04,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411397436] [2020-08-19 03:36:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:04,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411397436] [2020-08-19 03:36:04,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:04,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:04,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060021652] [2020-08-19 03:36:04,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:04,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:04,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:04,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:04,596 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-08-19 03:36:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:04,819 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-08-19 03:36:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:36:04,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 03:36:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:04,821 INFO L225 Difference]: With dead ends: 126 [2020-08-19 03:36:04,821 INFO L226 Difference]: Without dead ends: 122 [2020-08-19 03:36:04,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:36:04,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-19 03:36:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-08-19 03:36:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-19 03:36:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-08-19 03:36:04,828 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-08-19 03:36:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:04,829 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-08-19 03:36:04,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-08-19 03:36:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 03:36:04,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:04,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:36:04,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:36:04,830 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:04,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-08-19 03:36:04,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:04,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830997237] [2020-08-19 03:36:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:04,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830997237] [2020-08-19 03:36:04,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:04,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:04,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051588405] [2020-08-19 03:36:04,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:04,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:04,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:04,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:04,916 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-08-19 03:36:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:05,138 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-19 03:36:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:05,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 03:36:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:05,140 INFO L225 Difference]: With dead ends: 136 [2020-08-19 03:36:05,140 INFO L226 Difference]: Without dead ends: 116 [2020-08-19 03:36:05,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:36:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-19 03:36:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-08-19 03:36:05,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 03:36:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-08-19 03:36:05,158 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-08-19 03:36:05,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:05,159 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-08-19 03:36:05,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-08-19 03:36:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 03:36:05,160 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:05,160 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:05,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:36:05,160 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:05,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-08-19 03:36:05,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:05,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230471721] [2020-08-19 03:36:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:05,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:05,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230471721] [2020-08-19 03:36:05,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:05,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:05,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297113904] [2020-08-19 03:36:05,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:05,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:05,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:05,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:05,224 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-08-19 03:36:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:05,350 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-08-19 03:36:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:05,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-19 03:36:05,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:05,352 INFO L225 Difference]: With dead ends: 141 [2020-08-19 03:36:05,352 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 03:36:05,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 03:36:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-08-19 03:36:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 03:36:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-08-19 03:36:05,360 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-08-19 03:36:05,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:05,360 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-08-19 03:36:05,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-08-19 03:36:05,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:36:05,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:05,377 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:05,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:36:05,378 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:05,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-08-19 03:36:05,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:05,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748895968] [2020-08-19 03:36:05,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:05,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:05,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748895968] [2020-08-19 03:36:05,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:05,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:05,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246337532] [2020-08-19 03:36:05,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:05,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:05,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:05,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:05,417 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-08-19 03:36:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:05,548 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-08-19 03:36:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:05,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 03:36:05,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:05,549 INFO L225 Difference]: With dead ends: 79 [2020-08-19 03:36:05,549 INFO L226 Difference]: Without dead ends: 77 [2020-08-19 03:36:05,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:05,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-19 03:36:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-19 03:36:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-19 03:36:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-08-19 03:36:05,558 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-08-19 03:36:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:05,558 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-08-19 03:36:05,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-08-19 03:36:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:36:05,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:05,559 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:05,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:36:05,560 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-08-19 03:36:05,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:05,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717447909] [2020-08-19 03:36:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:05,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:05,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717447909] [2020-08-19 03:36:05,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:05,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:05,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338422956] [2020-08-19 03:36:05,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:05,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:05,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:05,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:05,618 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-08-19 03:36:05,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:05,770 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-08-19 03:36:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:36:05,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 03:36:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:05,772 INFO L225 Difference]: With dead ends: 78 [2020-08-19 03:36:05,772 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 03:36:05,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 03:36:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-08-19 03:36:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 03:36:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-19 03:36:05,778 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-08-19 03:36:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:05,778 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-19 03:36:05,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-19 03:36:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:36:05,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:05,783 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:05,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:36:05,784 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:05,786 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-08-19 03:36:05,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:05,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562451360] [2020-08-19 03:36:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:05,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562451360] [2020-08-19 03:36:05,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:05,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:36:05,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959442437] [2020-08-19 03:36:05,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:36:05,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:05,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:36:05,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:05,853 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-08-19 03:36:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:06,147 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-08-19 03:36:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:36:06,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 03:36:06,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:06,149 INFO L225 Difference]: With dead ends: 179 [2020-08-19 03:36:06,150 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 03:36:06,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:36:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 03:36:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-08-19 03:36:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-19 03:36:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-19 03:36:06,157 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-08-19 03:36:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:06,157 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-19 03:36:06,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:36:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-19 03:36:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:36:06,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:06,158 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:06,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:36:06,159 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:06,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:06,159 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-08-19 03:36:06,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:06,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1907268685] [2020-08-19 03:36:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:06,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:36:06,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1907268685] [2020-08-19 03:36:06,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:06,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 03:36:06,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141489161] [2020-08-19 03:36:06,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:36:06,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:06,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:36:06,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:36:06,513 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 9 states. [2020-08-19 03:36:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:07,331 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2020-08-19 03:36:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:36:07,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-19 03:36:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:07,337 INFO L225 Difference]: With dead ends: 182 [2020-08-19 03:36:07,338 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 03:36:07,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:36:07,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 03:36:07,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 104. [2020-08-19 03:36:07,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 03:36:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-08-19 03:36:07,354 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 28 [2020-08-19 03:36:07,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:07,354 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-08-19 03:36:07,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:36:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-08-19 03:36:07,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 03:36:07,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:07,361 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:07,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:36:07,361 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:07,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-08-19 03:36:07,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:07,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425756204] [2020-08-19 03:36:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:07,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:36:07,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425756204] [2020-08-19 03:36:07,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:07,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:36:07,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536770811] [2020-08-19 03:36:07,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:36:07,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:07,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:36:07,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:36:07,447 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 5 states. [2020-08-19 03:36:07,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:07,677 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-08-19 03:36:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:36:07,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 03:36:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:07,679 INFO L225 Difference]: With dead ends: 150 [2020-08-19 03:36:07,679 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 03:36:07,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:36:07,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 03:36:07,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-08-19 03:36:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 03:36:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-08-19 03:36:07,688 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 30 [2020-08-19 03:36:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:07,689 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-08-19 03:36:07,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:36:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-08-19 03:36:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 03:36:07,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:07,691 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:07,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:36:07,691 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:07,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:07,692 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-08-19 03:36:07,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:07,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312147567] [2020-08-19 03:36:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:07,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:36:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:36:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 03:36:07,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312147567] [2020-08-19 03:36:07,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:36:07,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:36:07,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216510546] [2020-08-19 03:36:07,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:36:07,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:36:07,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:36:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:07,743 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 4 states. [2020-08-19 03:36:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:36:07,887 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-08-19 03:36:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:36:07,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-19 03:36:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:36:07,889 INFO L225 Difference]: With dead ends: 124 [2020-08-19 03:36:07,889 INFO L226 Difference]: Without dead ends: 122 [2020-08-19 03:36:07,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:36:07,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-19 03:36:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-08-19 03:36:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 03:36:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-08-19 03:36:07,899 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 30 [2020-08-19 03:36:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:36:07,900 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-08-19 03:36:07,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:36:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-08-19 03:36:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 03:36:07,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:36:07,902 INFO L422 BasicCegarLoop]: trace histogram [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 03:36:07,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 03:36:07,903 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:36:07,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:36:07,903 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-08-19 03:36:07,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:36:07,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490143715] [2020-08-19 03:36:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:36:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:36:07,927 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:36:07,928 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:36:07,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 03:36:07,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:36:07 BoogieIcfgContainer [2020-08-19 03:36:07,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:36:07,978 INFO L168 Benchmark]: Toolchain (without parser) took 6947.52 ms. Allocated memory was 138.4 MB in the beginning and 284.7 MB in the end (delta: 146.3 MB). Free memory was 100.3 MB in the beginning and 211.0 MB in the end (delta: -110.7 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:07,978 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:36:07,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.96 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:07,980 INFO L168 Benchmark]: Boogie Preprocessor took 77.37 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 166.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:07,981 INFO L168 Benchmark]: RCFGBuilder took 779.77 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 111.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-19 03:36:07,981 INFO L168 Benchmark]: TraceAbstraction took 5415.59 ms. Allocated memory was 202.9 MB in the beginning and 284.7 MB in the end (delta: 81.8 MB). Free memory was 110.3 MB in the beginning and 211.0 MB in the end (delta: -100.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:36:07,985 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 668.96 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 100.0 MB in the beginning and 170.0 MB in the end (delta: -69.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.37 ms. Allocated memory is still 202.9 MB. Free memory was 170.0 MB in the beginning and 166.5 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 779.77 ms. Allocated memory is still 202.9 MB. Free memory was 166.5 MB in the beginning and 111.0 MB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5415.59 ms. Allocated memory was 202.9 MB in the beginning and 284.7 MB in the end (delta: 81.8 MB). Free memory was 110.3 MB in the beginning and 211.0 MB in the end (delta: -100.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); [L993] list->next = ((void*)0) [L994] list->prev = ((void*)0) [L995] COND FALSE !(!(list != ((void*)0))) [L995] COND FALSE !(__VERIFIER_nondet_int()) [L995] list->inner = malloc(sizeof(SLL)) [L995] EXPR list->inner [L995] list->inner->next = ((void*)0) [L995] EXPR list->inner [L995] list->inner->inner = ((void*)0) [L995] EXPR list->inner [L995] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L995] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L997] SLL* end = list; [L1000] COND FALSE !(__VERIFIER_nondet_int()) [L1011] end = ((void*)0) [L1012] end = list [L1015] COND FALSE !(!(((void*)0) != end)) [L1017] COND TRUE ((void*)0) != end [L1019] int len = 0; [L1020] EXPR end->inner [L1020] SLL* inner = end->inner; [L1021] COND TRUE ((void*)0) != inner [L1023] COND TRUE len == 0 [L1024] len = 1 [L1027] COND FALSE !(!(((void*)0) != inner)) [L1028] EXPR inner->inner [L1028] COND FALSE !(!(((void*)0) == inner->inner)) [L1029] EXPR inner->next [L1029] COND TRUE !(((void*)0) != inner->next) [L1029] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 88 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.3s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1016 SDtfs, 1075 SDslu, 1380 SDs, 0 SdLazy, 1834 SolverSat, 94 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 367 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 49886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 2/2 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...