/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=0.2 -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 04:24:29,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:24:29,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:24:29,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:24:29,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:24:29,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:24:29,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:24:29,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:24:29,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:24:29,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:24:29,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:24:29,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:24:29,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:24:29,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:24:29,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:24:29,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:24:29,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:24:29,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:24:29,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:24:29,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:24:29,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:24:29,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:24:29,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:24:29,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:24:29,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:24:29,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:24:29,966 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:24:29,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:24:29,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:24:29,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:24:29,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:24:29,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:24:29,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:24:29,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:24:29,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:24:29,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:24:29,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:24:29,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:24:29,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:24:29,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:24:29,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:24:29,982 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 04:24:30,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:24:30,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:24:30,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:24:30,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:24:30,025 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:24:30,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:24:30,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:24:30,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:24:30,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:24:30,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:24:30,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:24:30,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:24:30,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:24:30,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:24:30,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:24:30,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:24:30,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:24:30,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:24:30,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:24:30,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:24:30,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:24:30,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:24:30,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:24:30,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:24:30,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:24:30,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:24:30,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:24:30,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:24:30,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:24:30,031 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=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:24:30,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:24:30,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:24:30,355 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:24:30,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:24:30,357 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:24:30,358 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-19 04:24:30,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4e23a72/68ee4086f4814b72a47200a2c21b5616/FLAG6f5d85e76 [2020-08-19 04:24:30,959 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:24:30,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-08-19 04:24:30,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4e23a72/68ee4086f4814b72a47200a2c21b5616/FLAG6f5d85e76 [2020-08-19 04:24:31,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf4e23a72/68ee4086f4814b72a47200a2c21b5616 [2020-08-19 04:24:31,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:24:31,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:24:31,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:31,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:24:31,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:24:31,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b376011 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31, skipping insertion in model container [2020-08-19 04:24:31,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:24:31,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:24:31,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:31,814 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:24:31,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:24:31,938 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:24:31,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31 WrapperNode [2020-08-19 04:24:31,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:24:31,939 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:24:31,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:24:31,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:24:31,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:31,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:32,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:32,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (1/1) ... [2020-08-19 04:24:32,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:24:32,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:24:32,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:24:32,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:24:32,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (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 04:24:32,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:24:32,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:24:32,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 04:24:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 04:24:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 04:24:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 04:24:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 04:24:32,098 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 04:24:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 04:24:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 04:24:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 04:24:32,102 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 04:24:32,103 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 04:24:32,104 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 04:24:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 04:24:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 04:24:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 04:24:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 04:24:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 04:24:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 04:24:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 04:24:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 04:24:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 04:24:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 04:24:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 04:24:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 04:24:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 04:24:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 04:24:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 04:24:32,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:24:32,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:24:32,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:24:32,788 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:24:32,789 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-19 04:24:32,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:32 BoogieIcfgContainer [2020-08-19 04:24:32,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:24:32,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:24:32,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:24:32,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:24:32,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:24:31" (1/3) ... [2020-08-19 04:24:32,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59649e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:32, skipping insertion in model container [2020-08-19 04:24:32,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:24:31" (2/3) ... [2020-08-19 04:24:32,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59649e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:24:32, skipping insertion in model container [2020-08-19 04:24:32,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:24:32" (3/3) ... [2020-08-19 04:24:32,803 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-08-19 04:24:32,814 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:24:32,822 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-19 04:24:32,837 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-19 04:24:32,865 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:24:32,865 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:24:32,866 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:24:32,866 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:24:32,866 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:24:32,866 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:24:32,867 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:24:32,867 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:24:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-19 04:24:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 04:24:32,897 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:32,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:32,899 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 04:24:32,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:32,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-08-19 04:24:32,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:32,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531195100] [2020-08-19 04:24:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,148 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 04:24:33,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531195100] [2020-08-19 04:24:33,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:33,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:33,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72011890] [2020-08-19 04:24:33,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:33,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:33,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:33,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:33,179 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-19 04:24:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:33,458 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-08-19 04:24:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:33,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 04:24:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:33,473 INFO L225 Difference]: With dead ends: 186 [2020-08-19 04:24:33,473 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 04:24:33,478 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 04:24:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 04:24:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-08-19 04:24:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 04:24:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-19 04:24:33,530 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-08-19 04:24:33,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:33,531 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-19 04:24:33,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:33,531 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-19 04:24:33,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 04:24:33,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:33,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:33,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:24:33,533 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 04:24:33,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:33,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-08-19 04:24:33,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:33,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874235976] [2020-08-19 04:24:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,595 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 04:24:33,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874235976] [2020-08-19 04:24:33,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:33,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:33,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597206044] [2020-08-19 04:24:33,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:33,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:33,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:33,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:33,599 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-08-19 04:24:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:33,753 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-08-19 04:24:33,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:33,754 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-19 04:24:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:33,755 INFO L225 Difference]: With dead ends: 84 [2020-08-19 04:24:33,756 INFO L226 Difference]: Without dead ends: 82 [2020-08-19 04:24:33,757 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 04:24:33,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-19 04:24:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-08-19 04:24:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-19 04:24:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-08-19 04:24:33,768 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-08-19 04:24:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:33,769 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-08-19 04:24:33,769 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-08-19 04:24:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 04:24:33,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:33,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:33,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:24:33,770 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 04:24:33,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:33,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-08-19 04:24:33,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:33,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224797981] [2020-08-19 04:24:33,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:33,841 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 04:24:33,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224797981] [2020-08-19 04:24:33,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:33,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:33,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981907784] [2020-08-19 04:24:33,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:33,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:33,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:33,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:33,844 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-08-19 04:24:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:34,067 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2020-08-19 04:24:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:24:34,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 04:24:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:34,069 INFO L225 Difference]: With dead ends: 138 [2020-08-19 04:24:34,070 INFO L226 Difference]: Without dead ends: 136 [2020-08-19 04:24:34,070 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 04:24:34,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-19 04:24:34,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 84. [2020-08-19 04:24:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-19 04:24:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-08-19 04:24:34,082 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 14 [2020-08-19 04:24:34,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:34,082 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-08-19 04:24:34,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-08-19 04:24:34,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 04:24:34,083 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:34,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:34,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:24:34,084 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 04:24:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:34,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1462880870, now seen corresponding path program 1 times [2020-08-19 04:24:34,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:34,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569323972] [2020-08-19 04:24:34,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,197 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 04:24:34,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569323972] [2020-08-19 04:24:34,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:34,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:34,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96868279] [2020-08-19 04:24:34,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:34,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:34,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:34,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:34,200 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 5 states. [2020-08-19 04:24:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:34,373 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-08-19 04:24:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:24:34,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 04:24:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:34,375 INFO L225 Difference]: With dead ends: 84 [2020-08-19 04:24:34,375 INFO L226 Difference]: Without dead ends: 82 [2020-08-19 04:24:34,376 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 04:24:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-19 04:24:34,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-19 04:24:34,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 04:24:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-08-19 04:24:34,384 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-08-19 04:24:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:34,384 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-08-19 04:24:34,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-08-19 04:24:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:24:34,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:34,385 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 04:24:34,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:24:34,386 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 04:24:34,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:34,386 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-08-19 04:24:34,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:34,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401010817] [2020-08-19 04:24:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,457 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 04:24:34,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401010817] [2020-08-19 04:24:34,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:34,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:34,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259693214] [2020-08-19 04:24:34,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:34,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:34,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:34,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:34,459 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 5 states. [2020-08-19 04:24:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:34,673 INFO L93 Difference]: Finished difference Result 199 states and 221 transitions. [2020-08-19 04:24:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:24:34,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 04:24:34,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:34,675 INFO L225 Difference]: With dead ends: 199 [2020-08-19 04:24:34,675 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 04:24:34,676 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 04:24:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 04:24:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 81. [2020-08-19 04:24:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-19 04:24:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-08-19 04:24:34,690 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 19 [2020-08-19 04:24:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:34,690 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-08-19 04:24:34,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-08-19 04:24:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:24:34,691 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:34,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:24:34,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:24:34,692 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 04:24:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash -631612141, now seen corresponding path program 1 times [2020-08-19 04:24:34,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:34,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595189955] [2020-08-19 04:24:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:34,776 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 04:24:34,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595189955] [2020-08-19 04:24:34,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:34,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:24:34,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616142709] [2020-08-19 04:24:34,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:24:34,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:24:34,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:24:34,779 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 6 states. [2020-08-19 04:24:35,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:35,006 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2020-08-19 04:24:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:24:35,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 04:24:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:35,008 INFO L225 Difference]: With dead ends: 126 [2020-08-19 04:24:35,009 INFO L226 Difference]: Without dead ends: 122 [2020-08-19 04:24:35,009 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 04:24:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-19 04:24:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 77. [2020-08-19 04:24:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-19 04:24:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-08-19 04:24:35,027 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 19 [2020-08-19 04:24:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:35,031 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-08-19 04:24:35,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:24:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-08-19 04:24:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 04:24:35,032 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:35,032 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 04:24:35,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:24:35,032 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 04:24:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-08-19 04:24:35,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:35,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549570887] [2020-08-19 04:24:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,135 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 04:24:35,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549570887] [2020-08-19 04:24:35,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:35,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:24:35,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695904148] [2020-08-19 04:24:35,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:24:35,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:35,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:24:35,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:24:35,140 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 6 states. [2020-08-19 04:24:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:35,341 INFO L93 Difference]: Finished difference Result 136 states and 150 transitions. [2020-08-19 04:24:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:24:35,342 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 04:24:35,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:35,343 INFO L225 Difference]: With dead ends: 136 [2020-08-19 04:24:35,343 INFO L226 Difference]: Without dead ends: 116 [2020-08-19 04:24:35,344 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 04:24:35,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-19 04:24:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 76. [2020-08-19 04:24:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 04:24:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2020-08-19 04:24:35,350 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 20 [2020-08-19 04:24:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:35,351 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2020-08-19 04:24:35,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:24:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2020-08-19 04:24:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 04:24:35,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:35,352 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 04:24:35,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:24:35,353 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 04:24:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-08-19 04:24:35,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:35,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428622594] [2020-08-19 04:24:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,420 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 04:24:35,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428622594] [2020-08-19 04:24:35,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:35,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:35,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162061570] [2020-08-19 04:24:35,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:35,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:35,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:35,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:35,423 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 4 states. [2020-08-19 04:24:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:35,550 INFO L93 Difference]: Finished difference Result 141 states and 159 transitions. [2020-08-19 04:24:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:35,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-19 04:24:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:35,552 INFO L225 Difference]: With dead ends: 141 [2020-08-19 04:24:35,552 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 04:24:35,553 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 04:24:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 04:24:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 79. [2020-08-19 04:24:35,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-19 04:24:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2020-08-19 04:24:35,566 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 24 [2020-08-19 04:24:35,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:35,567 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2020-08-19 04:24:35,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2020-08-19 04:24:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 04:24:35,569 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:35,569 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 04:24:35,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:24:35,570 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 04:24:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:35,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-08-19 04:24:35,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:35,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521615038] [2020-08-19 04:24:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,652 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 04:24:35,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521615038] [2020-08-19 04:24:35,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:35,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:35,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441992968] [2020-08-19 04:24:35,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:35,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:35,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:35,656 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 4 states. [2020-08-19 04:24:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:35,767 INFO L93 Difference]: Finished difference Result 79 states and 89 transitions. [2020-08-19 04:24:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:35,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 04:24:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:35,769 INFO L225 Difference]: With dead ends: 79 [2020-08-19 04:24:35,769 INFO L226 Difference]: Without dead ends: 77 [2020-08-19 04:24:35,769 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 04:24:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-19 04:24:35,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-08-19 04:24:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-08-19 04:24:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-08-19 04:24:35,775 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 25 [2020-08-19 04:24:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:35,776 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-08-19 04:24:35,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:35,776 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-08-19 04:24:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 04:24:35,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:35,777 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 04:24:35,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:24:35,777 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 04:24:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-08-19 04:24:35,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:35,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160352627] [2020-08-19 04:24:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:35,829 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 04:24:35,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160352627] [2020-08-19 04:24:35,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:35,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:35,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264398856] [2020-08-19 04:24:35,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:35,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:35,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:35,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:35,832 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand 5 states. [2020-08-19 04:24:35,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:35,966 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-08-19 04:24:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 04:24:35,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 04:24:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:35,967 INFO L225 Difference]: With dead ends: 78 [2020-08-19 04:24:35,968 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 04:24:35,968 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 04:24:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 04:24:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-08-19 04:24:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 04:24:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-19 04:24:35,974 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 27 [2020-08-19 04:24:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:35,974 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-19 04:24:35,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-19 04:24:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 04:24:35,975 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:35,975 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 04:24:35,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:24:35,976 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 04:24:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:35,976 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-08-19 04:24:35,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:35,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386994674] [2020-08-19 04:24:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:36,036 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 04:24:36,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386994674] [2020-08-19 04:24:36,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:36,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 04:24:36,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751749975] [2020-08-19 04:24:36,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 04:24:36,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:36,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 04:24:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 04:24:36,038 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 6 states. [2020-08-19 04:24:36,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:36,343 INFO L93 Difference]: Finished difference Result 179 states and 203 transitions. [2020-08-19 04:24:36,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:24:36,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 04:24:36,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:36,345 INFO L225 Difference]: With dead ends: 179 [2020-08-19 04:24:36,349 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 04:24:36,350 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 04:24:36,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 04:24:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 85. [2020-08-19 04:24:36,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-19 04:24:36,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-19 04:24:36,358 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 28 [2020-08-19 04:24:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:36,359 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-19 04:24:36,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 04:24:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-19 04:24:36,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 04:24:36,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:36,360 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 04:24:36,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:24:36,361 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 04:24:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-08-19 04:24:36,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:36,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505646512] [2020-08-19 04:24:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:36,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:36,652 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 04:24:36,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505646512] [2020-08-19 04:24:36,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:36,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:24:36,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885910318] [2020-08-19 04:24:36,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:24:36,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:36,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:24:36,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:24:36,655 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 9 states. [2020-08-19 04:24:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:37,452 INFO L93 Difference]: Finished difference Result 182 states and 205 transitions. [2020-08-19 04:24:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 04:24:37,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-19 04:24:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:37,458 INFO L225 Difference]: With dead ends: 182 [2020-08-19 04:24:37,459 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 04:24:37,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:24:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 04:24:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 104. [2020-08-19 04:24:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 04:24:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2020-08-19 04:24:37,470 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 28 [2020-08-19 04:24:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:37,471 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2020-08-19 04:24:37,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:24:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2020-08-19 04:24:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 04:24:37,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:37,480 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 04:24:37,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:24:37,480 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 04:24:37,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:37,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1429819819, now seen corresponding path program 1 times [2020-08-19 04:24:37,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:37,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120461617] [2020-08-19 04:24:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:37,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:37,568 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 04:24:37,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120461617] [2020-08-19 04:24:37,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:37,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:24:37,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547804174] [2020-08-19 04:24:37,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:24:37,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:37,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:24:37,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:24:37,572 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand 5 states. [2020-08-19 04:24:37,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:37,775 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-08-19 04:24:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 04:24:37,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 04:24:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:37,777 INFO L225 Difference]: With dead ends: 150 [2020-08-19 04:24:37,777 INFO L226 Difference]: Without dead ends: 132 [2020-08-19 04:24:37,778 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 04:24:37,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-08-19 04:24:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 124. [2020-08-19 04:24:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 04:24:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-08-19 04:24:37,786 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 30 [2020-08-19 04:24:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:37,786 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-08-19 04:24:37,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:24:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-08-19 04:24:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 04:24:37,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:37,787 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 04:24:37,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 04:24:37,788 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 04:24:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash -753501909, now seen corresponding path program 1 times [2020-08-19 04:24:37,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:37,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539523781] [2020-08-19 04:24:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:24:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:24:37,834 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 04:24:37,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539523781] [2020-08-19 04:24:37,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:24:37,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:24:37,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069703888] [2020-08-19 04:24:37,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:24:37,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:24:37,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:24:37,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:24:37,837 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 4 states. [2020-08-19 04:24:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:24:37,975 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2020-08-19 04:24:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:24:37,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-19 04:24:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:24:37,977 INFO L225 Difference]: With dead ends: 124 [2020-08-19 04:24:37,977 INFO L226 Difference]: Without dead ends: 122 [2020-08-19 04:24:37,979 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 04:24:37,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-19 04:24:37,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-08-19 04:24:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 04:24:37,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 145 transitions. [2020-08-19 04:24:37,987 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 145 transitions. Word has length 30 [2020-08-19 04:24:37,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:24:37,987 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 145 transitions. [2020-08-19 04:24:37,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:24:37,988 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 145 transitions. [2020-08-19 04:24:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 04:24:37,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:24:37,991 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 04:24:37,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 04:24:37,991 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 04:24:37,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:24:37,993 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-08-19 04:24:37,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:24:37,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700348279] [2020-08-19 04:24:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:24:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 04:24:38,014 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 04:24:38,014 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:24:38,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 04:24:38,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:24:38 BoogieIcfgContainer [2020-08-19 04:24:38,039 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:24:38,042 INFO L168 Benchmark]: Toolchain (without parser) took 6761.97 ms. Allocated memory was 141.6 MB in the beginning and 278.4 MB in the end (delta: 136.8 MB). Free memory was 103.0 MB in the beginning and 144.8 MB in the end (delta: -41.8 MB). Peak memory consumption was 95.0 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:38,042 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 04:24:38,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.99 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 172.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:38,044 INFO L168 Benchmark]: Boogie Preprocessor took 81.41 ms. Allocated memory is still 206.0 MB. Free memory was 172.4 MB in the beginning and 169.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:38,044 INFO L168 Benchmark]: RCFGBuilder took 772.49 ms. Allocated memory is still 206.0 MB. Free memory was 169.1 MB in the beginning and 112.7 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:38,045 INFO L168 Benchmark]: TraceAbstraction took 5244.03 ms. Allocated memory was 206.0 MB in the beginning and 278.4 MB in the end (delta: 72.4 MB). Free memory was 112.0 MB in the beginning and 144.8 MB in the end (delta: -32.8 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:24:38,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.99 ms. Allocated memory was 141.6 MB in the beginning and 206.0 MB in the end (delta: 64.5 MB). Free memory was 102.8 MB in the beginning and 172.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.41 ms. Allocated memory is still 206.0 MB. Free memory was 172.4 MB in the beginning and 169.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 772.49 ms. Allocated memory is still 206.0 MB. Free memory was 169.1 MB in the beginning and 112.7 MB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5244.03 ms. Allocated memory was 206.0 MB in the beginning and 278.4 MB in the end (delta: 72.4 MB). Free memory was 112.0 MB in the beginning and 144.8 MB in the end (delta: -32.8 MB). Peak memory consumption was 39.6 MB. 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: 5.1s, OverallIterations: 15, TraceHistogramMax: 1, AutomataDifference: 3.3s, 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, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s 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, 0.9s 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...