/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:31:30,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:31:30,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:31:30,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 19:31:30,635 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 19:31:30,636 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 19:31:30,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 19:31:30,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 19:31:30,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 19:31:30,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 19:31:30,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 19:31:30,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 19:31:30,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:31:30,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:31:30,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:31:30,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:31:30,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:31:30,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:31:30,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:31:30,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:31:30,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:31:30,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:31:30,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:31:30,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:31:30,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 19:31:30,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 19:31:30,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 19:31:30,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 19:31:30,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 19:31:30,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 19:31:30,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 19:31:30,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 19:31:30,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 19:31:30,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 19:31:30,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 19:31:30,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 19:31:30,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 19:31:30,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 19:31:30,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:31:30,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:31:30,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:31:30,674 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 [2020-08-18 19:31:30,697 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:31:30,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:31:30,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:31:30,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:31:30,699 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:31:30,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:31:30,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:31:30,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:31:30,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:31:30,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:31:30,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:31:30,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:31:30,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:31:30,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:31:30,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:31:30,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:31:30,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:31:30,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:31:30,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:31:30,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:31:30,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:31:30,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:31:30,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:31:30,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:31:30,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:31:30,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:31:30,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:31:30,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:31:30,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:31:30,704 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:31:30,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:31:31,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:31:31,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:31:31,018 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:31:31,019 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:31:31,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 19:31:31,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98f7bc69/cef79fe24a464a42b384000c099d7a9f/FLAGc73fbcda7 [2020-08-18 19:31:31,631 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:31:31,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-18 19:31:31,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98f7bc69/cef79fe24a464a42b384000c099d7a9f/FLAGc73fbcda7 [2020-08-18 19:31:31,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a98f7bc69/cef79fe24a464a42b384000c099d7a9f [2020-08-18 19:31:31,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:31:31,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:31:31,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:31:31,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:31:31,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:31:31,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:31:31" (1/1) ... [2020-08-18 19:31:31,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@407cd36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:31, skipping insertion in model container [2020-08-18 19:31:31,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:31:31" (1/1) ... [2020-08-18 19:31:31,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:31:31,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:31:32,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:31:32,381 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:31:32,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:31:32,508 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:31:32,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32 WrapperNode [2020-08-18 19:31:32,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:31:32,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:31:32,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:31:32,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:31:32,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (1/1) ... [2020-08-18 19:31:32,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:31:32,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:31:32,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:31:32,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:31:32,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (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 [2020-08-18 19:31:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:31:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:31:32,663 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:31:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 19:31:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 19:31:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 19:31:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 19:31:32,664 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 19:31:32,665 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 19:31:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 19:31:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 19:31:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 19:31:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 19:31:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 19:31:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 19:31:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 19:31:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 19:31:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 19:31:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 19:31:32,672 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 19:31:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 19:31:32,674 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 19:31:32,675 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 19:31:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 19:31:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 19:31:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 19:31:32,679 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 19:31:32,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 19:31:32,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:31:32,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:31:33,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:31:33,387 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-18 19:31:33,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:31:33 BoogieIcfgContainer [2020-08-18 19:31:33,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:31:33,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:31:33,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:31:33,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:31:33,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:31:31" (1/3) ... [2020-08-18 19:31:33,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f977eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:31:33, skipping insertion in model container [2020-08-18 19:31:33,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:31:32" (2/3) ... [2020-08-18 19:31:33,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f977eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:31:33, skipping insertion in model container [2020-08-18 19:31:33,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:31:33" (3/3) ... [2020-08-18 19:31:33,400 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-18 19:31:33,411 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:31:33,419 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-18 19:31:33,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-18 19:31:33,462 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:31:33,463 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:31:33,463 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:31:33,463 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:31:33,464 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:31:33,464 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:31:33,464 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:31:33,465 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:31:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-18 19:31:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-18 19:31:33,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:33,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:33,497 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]=== [2020-08-18 19:31:33,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:33,504 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-18 19:31:33,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:33,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116988848] [2020-08-18 19:31:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:33,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:33,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116988848] [2020-08-18 19:31:33,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:33,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:33,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189172619] [2020-08-18 19:31:33,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:33,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:33,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:33,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:33,750 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-18 19:31:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:34,080 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-18 19:31:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:34,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-18 19:31:34,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:34,094 INFO L225 Difference]: With dead ends: 188 [2020-08-18 19:31:34,094 INFO L226 Difference]: Without dead ends: 100 [2020-08-18 19:31:34,098 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 [2020-08-18 19:31:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-18 19:31:34,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-18 19:31:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 19:31:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 19:31:34,148 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-18 19:31:34,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:34,149 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 19:31:34,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:34,149 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 19:31:34,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 19:31:34,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:34,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:34,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:31:34,151 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]=== [2020-08-18 19:31:34,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:34,151 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-18 19:31:34,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:34,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110868061] [2020-08-18 19:31:34,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:34,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110868061] [2020-08-18 19:31:34,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:34,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:34,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765643337] [2020-08-18 19:31:34,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:34,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:34,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:34,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:34,216 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-18 19:31:34,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:34,376 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-18 19:31:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:34,376 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-18 19:31:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:34,378 INFO L225 Difference]: With dead ends: 85 [2020-08-18 19:31:34,378 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 19:31:34,379 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 [2020-08-18 19:31:34,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 19:31:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-18 19:31:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-18 19:31:34,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-18 19:31:34,391 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-18 19:31:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:34,391 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-18 19:31:34,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-18 19:31:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 19:31:34,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:34,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:34,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:31:34,393 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]=== [2020-08-18 19:31:34,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:34,394 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-18 19:31:34,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:34,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659217932] [2020-08-18 19:31:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:34,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659217932] [2020-08-18 19:31:34,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:34,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:31:34,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796873219] [2020-08-18 19:31:34,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:31:34,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:34,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:31:34,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:31:34,487 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-18 19:31:34,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:34,746 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-18 19:31:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:31:34,746 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 19:31:34,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:34,748 INFO L225 Difference]: With dead ends: 140 [2020-08-18 19:31:34,748 INFO L226 Difference]: Without dead ends: 138 [2020-08-18 19:31:34,749 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 [2020-08-18 19:31:34,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-18 19:31:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-18 19:31:34,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-18 19:31:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-18 19:31:34,759 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-18 19:31:34,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:34,760 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-18 19:31:34,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:31:34,760 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-18 19:31:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 19:31:34,761 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:34,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:34,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:31:34,762 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]=== [2020-08-18 19:31:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-18 19:31:34,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:34,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834921479] [2020-08-18 19:31:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:34,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834921479] [2020-08-18 19:31:34,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:34,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:31:34,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711542402] [2020-08-18 19:31:34,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:31:34,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:34,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:31:34,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:31:34,876 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-18 19:31:35,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:35,088 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-18 19:31:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:31:35,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-18 19:31:35,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:35,090 INFO L225 Difference]: With dead ends: 85 [2020-08-18 19:31:35,091 INFO L226 Difference]: Without dead ends: 83 [2020-08-18 19:31:35,091 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 [2020-08-18 19:31:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-18 19:31:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-18 19:31:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-18 19:31:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-18 19:31:35,113 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-18 19:31:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:35,113 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-18 19:31:35,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:31:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-18 19:31:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:31:35,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:35,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:35,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:31:35,116 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]=== [2020-08-18 19:31:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:35,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-18 19:31:35,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:35,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722595633] [2020-08-18 19:31:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:35,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722595633] [2020-08-18 19:31:35,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:35,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:35,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926525081] [2020-08-18 19:31:35,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:35,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:35,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:35,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:35,229 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-18 19:31:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:35,398 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-18 19:31:35,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:35,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 19:31:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:35,400 INFO L225 Difference]: With dead ends: 83 [2020-08-18 19:31:35,400 INFO L226 Difference]: Without dead ends: 79 [2020-08-18 19:31:35,401 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 [2020-08-18 19:31:35,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-18 19:31:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-18 19:31:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 19:31:35,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-18 19:31:35,417 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-18 19:31:35,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:35,417 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-18 19:31:35,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-18 19:31:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 19:31:35,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:35,419 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] [2020-08-18 19:31:35,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:31:35,419 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]=== [2020-08-18 19:31:35,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:35,420 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-18 19:31:35,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:35,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104127511] [2020-08-18 19:31:35,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:35,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104127511] [2020-08-18 19:31:35,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:35,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:31:35,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394079954] [2020-08-18 19:31:35,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:31:35,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:35,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:31:35,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:31:35,513 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-18 19:31:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:35,717 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-18 19:31:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:31:35,717 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-18 19:31:35,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:35,718 INFO L225 Difference]: With dead ends: 136 [2020-08-18 19:31:35,719 INFO L226 Difference]: Without dead ends: 116 [2020-08-18 19:31:35,719 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 [2020-08-18 19:31:35,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-18 19:31:35,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-18 19:31:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-18 19:31:35,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-18 19:31:35,727 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-18 19:31:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:35,727 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-18 19:31:35,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:31:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-18 19:31:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 19:31:35,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:35,729 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] [2020-08-18 19:31:35,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:31:35,729 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]=== [2020-08-18 19:31:35,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:35,730 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-18 19:31:35,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:35,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935220740] [2020-08-18 19:31:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:35,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935220740] [2020-08-18 19:31:35,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:35,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:35,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922804894] [2020-08-18 19:31:35,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:35,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:35,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:35,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:35,790 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-18 19:31:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:35,909 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-18 19:31:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:35,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-18 19:31:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:35,911 INFO L225 Difference]: With dead ends: 141 [2020-08-18 19:31:35,911 INFO L226 Difference]: Without dead ends: 99 [2020-08-18 19:31:35,912 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 [2020-08-18 19:31:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-18 19:31:35,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-18 19:31:35,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 19:31:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 19:31:35,919 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-18 19:31:35,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:35,920 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 19:31:35,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 19:31:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 19:31:35,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:35,921 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] [2020-08-18 19:31:35,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:31:35,922 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]=== [2020-08-18 19:31:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:35,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-18 19:31:35,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:35,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173739071] [2020-08-18 19:31:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:35,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173739071] [2020-08-18 19:31:35,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:35,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:35,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444467559] [2020-08-18 19:31:35,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:35,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:35,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:35,965 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-18 19:31:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:36,100 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-18 19:31:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:36,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 19:31:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:36,101 INFO L225 Difference]: With dead ends: 78 [2020-08-18 19:31:36,101 INFO L226 Difference]: Without dead ends: 76 [2020-08-18 19:31:36,101 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 [2020-08-18 19:31:36,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-18 19:31:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-18 19:31:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 19:31:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 19:31:36,107 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-18 19:31:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:36,108 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 19:31:36,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:36,108 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 19:31:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 19:31:36,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:36,109 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] [2020-08-18 19:31:36,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:31:36,110 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]=== [2020-08-18 19:31:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-18 19:31:36,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:36,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629370138] [2020-08-18 19:31:36,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:36,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629370138] [2020-08-18 19:31:36,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:36,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:31:36,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048674163] [2020-08-18 19:31:36,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:31:36,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:36,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:31:36,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:31:36,158 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-18 19:31:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:36,399 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-18 19:31:36,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:31:36,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 19:31:36,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:36,401 INFO L225 Difference]: With dead ends: 194 [2020-08-18 19:31:36,401 INFO L226 Difference]: Without dead ends: 130 [2020-08-18 19:31:36,402 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 [2020-08-18 19:31:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-18 19:31:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-18 19:31:36,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-18 19:31:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-18 19:31:36,415 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-18 19:31:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:36,415 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-18 19:31:36,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:31:36,416 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-18 19:31:36,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-18 19:31:36,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:36,417 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] [2020-08-18 19:31:36,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 19:31:36,418 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]=== [2020-08-18 19:31:36,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:36,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-18 19:31:36,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:36,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [479011322] [2020-08-18 19:31:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:36,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [479011322] [2020-08-18 19:31:36,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:36,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:31:36,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338220927] [2020-08-18 19:31:36,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:31:36,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:36,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:31:36,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:31:36,509 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-18 19:31:36,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:36,658 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-18 19:31:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:31:36,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-18 19:31:36,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:36,660 INFO L225 Difference]: With dead ends: 79 [2020-08-18 19:31:36,660 INFO L226 Difference]: Without dead ends: 77 [2020-08-18 19:31:36,661 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 [2020-08-18 19:31:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-18 19:31:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-18 19:31:36,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-18 19:31:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-18 19:31:36,668 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-18 19:31:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:36,668 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-18 19:31:36,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:31:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-18 19:31:36,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 19:31:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:36,673 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] [2020-08-18 19:31:36,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 19:31:36,673 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]=== [2020-08-18 19:31:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-18 19:31:36,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:36,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775514850] [2020-08-18 19:31:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:36,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775514850] [2020-08-18 19:31:36,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:36,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:31:36,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180549866] [2020-08-18 19:31:36,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:31:36,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:36,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:31:36,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:31:36,792 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-18 19:31:37,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:37,086 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-18 19:31:37,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:31:37,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-18 19:31:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:37,087 INFO L225 Difference]: With dead ends: 182 [2020-08-18 19:31:37,088 INFO L226 Difference]: Without dead ends: 139 [2020-08-18 19:31:37,088 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 [2020-08-18 19:31:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-18 19:31:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-18 19:31:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 19:31:37,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-18 19:31:37,098 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-18 19:31:37,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:37,098 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-18 19:31:37,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:31:37,098 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-18 19:31:37,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 19:31:37,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:37,099 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] [2020-08-18 19:31:37,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 19:31:37,100 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]=== [2020-08-18 19:31:37,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:37,100 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-18 19:31:37,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:37,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900977754] [2020-08-18 19:31:37,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:37,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:37,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:37,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900977754] [2020-08-18 19:31:37,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:37,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:31:37,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292782395] [2020-08-18 19:31:37,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:31:37,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:37,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:31:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:31:37,401 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-18 19:31:38,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:38,149 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-18 19:31:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:31:38,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-18 19:31:38,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:38,153 INFO L225 Difference]: With dead ends: 237 [2020-08-18 19:31:38,154 INFO L226 Difference]: Without dead ends: 235 [2020-08-18 19:31:38,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:31:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-18 19:31:38,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-18 19:31:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-18 19:31:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-18 19:31:38,164 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-18 19:31:38,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:38,164 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-18 19:31:38,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:31:38,164 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-18 19:31:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:31:38,165 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:38,165 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] [2020-08-18 19:31:38,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 19:31:38,166 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]=== [2020-08-18 19:31:38,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:38,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-18 19:31:38,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:38,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135529307] [2020-08-18 19:31:38,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:31:38,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135529307] [2020-08-18 19:31:38,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:38,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 19:31:38,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501770132] [2020-08-18 19:31:38,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:31:38,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:38,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:31:38,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:31:38,244 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-18 19:31:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:38,454 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-18 19:31:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:31:38,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-18 19:31:38,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:38,457 INFO L225 Difference]: With dead ends: 145 [2020-08-18 19:31:38,457 INFO L226 Difference]: Without dead ends: 127 [2020-08-18 19:31:38,458 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 [2020-08-18 19:31:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-18 19:31:38,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-18 19:31:38,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-18 19:31:38,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-18 19:31:38,466 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-18 19:31:38,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:38,467 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-18 19:31:38,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:31:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-18 19:31:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 19:31:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:38,468 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] [2020-08-18 19:31:38,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 19:31:38,468 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]=== [2020-08-18 19:31:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:38,469 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-18 19:31:38,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:38,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321840500] [2020-08-18 19:31:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:31:38,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321840500] [2020-08-18 19:31:38,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:38,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:38,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396056550] [2020-08-18 19:31:38,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:38,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:38,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:38,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:38,514 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-18 19:31:38,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:38,649 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-18 19:31:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:38,650 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-18 19:31:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:38,651 INFO L225 Difference]: With dead ends: 119 [2020-08-18 19:31:38,651 INFO L226 Difference]: Without dead ends: 117 [2020-08-18 19:31:38,652 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 [2020-08-18 19:31:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-18 19:31:38,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-18 19:31:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-18 19:31:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-18 19:31:38,662 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-18 19:31:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:38,662 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-18 19:31:38,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-18 19:31:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-18 19:31:38,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:38,664 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] [2020-08-18 19:31:38,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 19:31:38,664 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]=== [2020-08-18 19:31:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-18 19:31:38,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:38,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1992322160] [2020-08-18 19:31:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:38,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1992322160] [2020-08-18 19:31:38,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:38,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 19:31:38,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387100123] [2020-08-18 19:31:38,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:31:38,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:38,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:31:38,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:31:38,865 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-18 19:31:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:39,533 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-18 19:31:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 19:31:39,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-18 19:31:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:39,535 INFO L225 Difference]: With dead ends: 240 [2020-08-18 19:31:39,535 INFO L226 Difference]: Without dead ends: 238 [2020-08-18 19:31:39,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:31:39,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-18 19:31:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-18 19:31:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 19:31:39,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-18 19:31:39,545 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-18 19:31:39,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:39,545 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-18 19:31:39,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:31:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-18 19:31:39,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 19:31:39,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:39,547 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:39,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 19:31:39,547 INFO L427 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-08-18 19:31:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:39,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-18 19:31:39,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:39,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184019260] [2020-08-18 19:31:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:39,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:39,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184019260] [2020-08-18 19:31:39,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:31:39,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:31:39,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699747570] [2020-08-18 19:31:39,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:31:39,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:31:39,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:31:39,638 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-18 19:31:39,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:39,927 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-18 19:31:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:31:39,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 19:31:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:39,930 INFO L225 Difference]: With dead ends: 207 [2020-08-18 19:31:39,930 INFO L226 Difference]: Without dead ends: 145 [2020-08-18 19:31:39,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:31:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-18 19:31:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-18 19:31:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-18 19:31:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-18 19:31:39,944 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-18 19:31:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:39,944 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-18 19:31:39,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:31:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-18 19:31:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 19:31:39,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:39,946 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, 1, 1] [2020-08-18 19:31:39,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 19:31:39,948 INFO L427 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-08-18 19:31:39,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:39,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-18 19:31:39,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:39,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083963334] [2020-08-18 19:31:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:40,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083963334] [2020-08-18 19:31:40,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:40,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:31:40,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638552881] [2020-08-18 19:31:40,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:31:40,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:40,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:31:40,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:31:40,072 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-18 19:31:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:40,384 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-18 19:31:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:31:40,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-18 19:31:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:40,386 INFO L225 Difference]: With dead ends: 198 [2020-08-18 19:31:40,386 INFO L226 Difference]: Without dead ends: 178 [2020-08-18 19:31:40,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:31:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-18 19:31:40,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-18 19:31:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-18 19:31:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-18 19:31:40,396 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-18 19:31:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:40,397 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-18 19:31:40,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:31:40,397 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-18 19:31:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-18 19:31:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:40,398 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, 1, 1] [2020-08-18 19:31:40,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 19:31:40,398 INFO L427 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-08-18 19:31:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-18 19:31:40,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:40,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099937631] [2020-08-18 19:31:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 19:31:40,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099937631] [2020-08-18 19:31:40,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:40,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:31:40,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424116622] [2020-08-18 19:31:40,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:31:40,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:40,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:31:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:31:40,461 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-18 19:31:40,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:40,645 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-18 19:31:40,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:31:40,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-18 19:31:40,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:40,647 INFO L225 Difference]: With dead ends: 182 [2020-08-18 19:31:40,647 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 19:31:40,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:31:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 19:31:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-18 19:31:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-18 19:31:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-18 19:31:40,658 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-18 19:31:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:40,658 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-18 19:31:40,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:31:40,659 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-18 19:31:40,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 19:31:40,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:40,660 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:40,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-18 19:31:40,660 INFO L427 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-08-18 19:31:40,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:40,660 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-18 19:31:40,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:40,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705644927] [2020-08-18 19:31:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:40,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705644927] [2020-08-18 19:31:40,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:31:40,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 19:31:40,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383052176] [2020-08-18 19:31:40,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:31:40,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:40,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:31:40,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:31:40,736 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-18 19:31:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:41,070 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-18 19:31:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 19:31:41,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-18 19:31:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:41,072 INFO L225 Difference]: With dead ends: 241 [2020-08-18 19:31:41,073 INFO L226 Difference]: Without dead ends: 210 [2020-08-18 19:31:41,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:31:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-18 19:31:41,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-18 19:31:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-18 19:31:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-18 19:31:41,085 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-18 19:31:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:41,085 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-18 19:31:41,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:31:41,085 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-18 19:31:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-18 19:31:41,086 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:41,086 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, 1, 1, 1, 1, 1] [2020-08-18 19:31:41,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-18 19:31:41,087 INFO L427 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-08-18 19:31:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-18 19:31:41,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:41,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021742726] [2020-08-18 19:31:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:41,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021742726] [2020-08-18 19:31:41,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:41,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 19:31:41,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419172073] [2020-08-18 19:31:41,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 19:31:41,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 19:31:41,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 19:31:41,131 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-18 19:31:41,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:41,278 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-18 19:31:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 19:31:41,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-18 19:31:41,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:41,280 INFO L225 Difference]: With dead ends: 354 [2020-08-18 19:31:41,280 INFO L226 Difference]: Without dead ends: 258 [2020-08-18 19:31:41,281 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 [2020-08-18 19:31:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-18 19:31:41,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-18 19:31:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-18 19:31:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-18 19:31:41,301 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-18 19:31:41,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:41,301 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-18 19:31:41,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 19:31:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-18 19:31:41,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 19:31:41,302 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:41,302 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:41,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-18 19:31:41,303 INFO L427 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-08-18 19:31:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:41,303 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-18 19:31:41,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:41,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968933416] [2020-08-18 19:31:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:41,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:41,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968933416] [2020-08-18 19:31:41,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:31:41,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:31:41,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699925881] [2020-08-18 19:31:41,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:31:41,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:41,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:31:41,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:31:41,596 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-18 19:31:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:42,362 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-18 19:31:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 19:31:42,362 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 19:31:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:42,365 INFO L225 Difference]: With dead ends: 430 [2020-08-18 19:31:42,365 INFO L226 Difference]: Without dead ends: 338 [2020-08-18 19:31:42,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-18 19:31:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-18 19:31:42,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-18 19:31:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-18 19:31:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-18 19:31:42,381 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-18 19:31:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:42,382 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-18 19:31:42,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:31:42,382 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-18 19:31:42,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 19:31:42,383 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:42,383 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:42,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-18 19:31:42,383 INFO L427 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-08-18 19:31:42,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:42,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-18 19:31:42,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:42,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838315782] [2020-08-18 19:31:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:42,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:42,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838315782] [2020-08-18 19:31:42,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:31:42,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 19:31:42,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829216820] [2020-08-18 19:31:42,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:31:42,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:42,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:31:42,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:31:42,439 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-18 19:31:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:42,654 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-18 19:31:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:31:42,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-18 19:31:42,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:42,659 INFO L225 Difference]: With dead ends: 353 [2020-08-18 19:31:42,659 INFO L226 Difference]: Without dead ends: 244 [2020-08-18 19:31:42,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:31:42,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-18 19:31:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-18 19:31:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-18 19:31:42,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-18 19:31:42,673 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-18 19:31:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:42,674 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-18 19:31:42,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:31:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-18 19:31:42,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 19:31:42,674 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:42,675 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:42,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-18 19:31:42,675 INFO L427 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-08-18 19:31:42,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:42,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-18 19:31:42,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:42,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925851846] [2020-08-18 19:31:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:31:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:31:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:31:42,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925851846] [2020-08-18 19:31:42,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:31:42,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 19:31:42,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204216915] [2020-08-18 19:31:42,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 19:31:42,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:31:42,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 19:31:42,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:31:42,910 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-18 19:31:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:31:43,579 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-18 19:31:43,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:31:43,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-18 19:31:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:31:43,582 INFO L225 Difference]: With dead ends: 441 [2020-08-18 19:31:43,582 INFO L226 Difference]: Without dead ends: 349 [2020-08-18 19:31:43,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:31:43,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-18 19:31:43,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-18 19:31:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 19:31:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-18 19:31:43,599 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-18 19:31:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:31:43,600 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-18 19:31:43,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 19:31:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-18 19:31:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-18 19:31:43,601 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:31:43,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:31:43,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-18 19:31:43,602 INFO L427 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-08-18 19:31:43,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:31:43,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-18 19:31:43,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:31:43,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294081567] [2020-08-18 19:31:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:31:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 19:31:43,634 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 19:31:43,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 19:31:43,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-18 19:31:43,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:31:43 BoogieIcfgContainer [2020-08-18 19:31:43,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:31:43,692 INFO L168 Benchmark]: Toolchain (without parser) took 11808.15 ms. Allocated memory was 137.9 MB in the beginning and 356.5 MB in the end (delta: 218.6 MB). Free memory was 99.7 MB in the beginning and 249.1 MB in the end (delta: -149.4 MB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2020-08-18 19:31:43,692 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 19:31:43,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.30 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 168.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:31:43,693 INFO L168 Benchmark]: Boogie Preprocessor took 91.71 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 165.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:31:43,694 INFO L168 Benchmark]: RCFGBuilder took 790.05 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 109.3 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2020-08-18 19:31:43,698 INFO L168 Benchmark]: TraceAbstraction took 10295.61 ms. Allocated memory was 201.9 MB in the beginning and 356.5 MB in the end (delta: 154.7 MB). Free memory was 108.6 MB in the beginning and 249.1 MB in the end (delta: -140.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-08-18 19:31:43,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.30 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 99.5 MB in the beginning and 168.0 MB in the end (delta: -68.5 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.71 ms. Allocated memory is still 201.9 MB. Free memory was 168.0 MB in the beginning and 165.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 790.05 ms. Allocated memory is still 201.9 MB. Free memory was 165.2 MB in the beginning and 109.3 MB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10295.61 ms. Allocated memory was 201.9 MB in the beginning and 356.5 MB in the end (delta: 154.7 MB). Free memory was 108.6 MB in the beginning and 249.1 MB in the end (delta: -140.5 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.1s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1788 SDtfs, 2214 SDslu, 3432 SDs, 0 SdLazy, 4020 SolverSat, 226 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 892 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 670 NumberOfCodeBlocks, 670 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 157879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 9/16 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...