/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -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 [2020-08-19 05:13:19,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:13:19,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:13:19,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:13:19,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:13:19,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:13:19,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:13:19,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:13:19,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:13:19,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:13:19,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:13:19,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:13:19,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:13:19,592 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:13:19,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:13:19,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:13:19,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:13:19,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:13:19,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:13:19,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:13:19,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:13:19,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:13:19,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:13:19,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:13:19,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:13:19,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:13:19,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:13:19,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:13:19,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:13:19,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:13:19,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:13:19,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:13:19,612 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:13:19,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:13:19,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:13:19,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:13:19,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:13:19,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:13:19,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:13:19,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:13:19,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:13:19,618 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:13:19,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:13:19,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:13:19,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:13:19,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:13:19,655 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:13:19,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:13:19,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:13:19,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:13:19,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:13:19,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:13:19,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:13:19,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:13:19,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:13:19,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:13:19,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:13:19,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:13:19,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:13:19,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:13:19,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:13:19,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:13:19,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:13:19,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:13:19,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:13:19,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:13:19,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:13:19,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:13:19,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:13:19,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:13:19,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:13:19,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:13:19,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:13:19,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:13:19,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:13:20,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:13:20,003 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:13:20,004 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 05:13:20,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e28640a/824895fe8274451599fa2e855bab72d6/FLAGa36d5e5e8 [2020-08-19 05:13:20,614 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:13:20,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-08-19 05:13:20,629 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e28640a/824895fe8274451599fa2e855bab72d6/FLAGa36d5e5e8 [2020-08-19 05:13:20,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23e28640a/824895fe8274451599fa2e855bab72d6 [2020-08-19 05:13:20,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:13:20,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:13:20,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:13:20,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:13:20,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:13:20,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:13:20" (1/1) ... [2020-08-19 05:13:20,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5996606d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:20, skipping insertion in model container [2020-08-19 05:13:20,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:13:20" (1/1) ... [2020-08-19 05:13:20,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:13:20,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:13:21,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:13:21,346 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:13:21,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:13:21,455 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:13:21,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21 WrapperNode [2020-08-19 05:13:21,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:13:21,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:13:21,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:13:21,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:13:21,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... [2020-08-19 05:13:21,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:13:21,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:13:21,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:13:21,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:13:21,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:13:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:13:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:13:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-19 05:13:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-19 05:13:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-19 05:13:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-19 05:13:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-19 05:13:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-19 05:13:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-19 05:13:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-19 05:13:21,616 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-19 05:13:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-19 05:13:21,617 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-19 05:13:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-19 05:13:21,618 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-19 05:13:21,619 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-19 05:13:21,620 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-19 05:13:21,622 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-19 05:13:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-19 05:13:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-19 05:13:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-19 05:13:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-19 05:13:21,623 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-19 05:13:21,625 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-19 05:13:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-19 05:13:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:13:21,626 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 05:13:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-19 05:13:21,627 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:13:21,628 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-19 05:13:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-19 05:13:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-19 05:13:21,629 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-19 05:13:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-19 05:13:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-19 05:13:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-19 05:13:21,630 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-19 05:13:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-19 05:13:21,631 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-19 05:13:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-19 05:13:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-19 05:13:21,632 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-19 05:13:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-19 05:13:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-19 05:13:21,633 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-19 05:13:21,634 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-19 05:13:21,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-19 05:13:21,636 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:13:21,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:13:22,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:13:22,297 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-08-19 05:13:22,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:13:22 BoogieIcfgContainer [2020-08-19 05:13:22,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:13:22,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:13:22,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:13:22,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:13:22,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:13:20" (1/3) ... [2020-08-19 05:13:22,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5748a3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:13:22, skipping insertion in model container [2020-08-19 05:13:22,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:13:21" (2/3) ... [2020-08-19 05:13:22,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5748a3f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:13:22, skipping insertion in model container [2020-08-19 05:13:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:13:22" (3/3) ... [2020-08-19 05:13:22,315 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-08-19 05:13:22,326 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:13:22,334 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-08-19 05:13:22,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-08-19 05:13:22,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:13:22,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:13:22,382 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:13:22,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:13:22,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:13:22,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:13:22,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:13:22,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:13:22,426 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-08-19 05:13:22,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-08-19 05:13:22,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:22,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:22,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:22,453 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-08-19 05:13:22,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:22,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939983458] [2020-08-19 05:13:22,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:22,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:22,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:22,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939983458] [2020-08-19 05:13:22,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:22,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:22,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437617371] [2020-08-19 05:13:22,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:22,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:22,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:22,733 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-08-19 05:13:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:22,981 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-08-19 05:13:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:22,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-08-19 05:13:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:22,995 INFO L225 Difference]: With dead ends: 188 [2020-08-19 05:13:22,995 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 05:13:22,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 05:13:23,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-08-19 05:13:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-19 05:13:23,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-19 05:13:23,049 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-08-19 05:13:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:23,050 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-19 05:13:23,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:23,050 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-19 05:13:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 05:13:23,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:23,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:23,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:13:23,052 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:23,053 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-08-19 05:13:23,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:23,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845378233] [2020-08-19 05:13:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:23,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845378233] [2020-08-19 05:13:23,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:23,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:23,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545479631] [2020-08-19 05:13:23,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:23,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:23,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:23,124 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-08-19 05:13:23,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:23,288 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-08-19 05:13:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:23,289 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-08-19 05:13:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:23,290 INFO L225 Difference]: With dead ends: 85 [2020-08-19 05:13:23,290 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 05:13:23,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 05:13:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-08-19 05:13:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-08-19 05:13:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-08-19 05:13:23,303 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-08-19 05:13:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:23,303 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-08-19 05:13:23,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-08-19 05:13:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 05:13:23,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:23,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:23,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:13:23,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-08-19 05:13:23,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:23,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75637148] [2020-08-19 05:13:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:23,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75637148] [2020-08-19 05:13:23,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:23,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:13:23,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923533281] [2020-08-19 05:13:23,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:13:23,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:23,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:13:23,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:23,413 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-08-19 05:13:23,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:23,685 INFO L93 Difference]: Finished difference Result 140 states and 157 transitions. [2020-08-19 05:13:23,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:13:23,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 05:13:23,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:23,690 INFO L225 Difference]: With dead ends: 140 [2020-08-19 05:13:23,690 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 05:13:23,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 05:13:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 85. [2020-08-19 05:13:23,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-19 05:13:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-08-19 05:13:23,709 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 14 [2020-08-19 05:13:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:23,709 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-08-19 05:13:23,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:13:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-08-19 05:13:23,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-19 05:13:23,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:23,713 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:23,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:13:23,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:23,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:23,715 INFO L82 PathProgramCache]: Analyzing trace with hash -646358176, now seen corresponding path program 1 times [2020-08-19 05:13:23,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:23,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136155530] [2020-08-19 05:13:23,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:23,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136155530] [2020-08-19 05:13:23,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:23,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:13:23,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559715699] [2020-08-19 05:13:23,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:13:23,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:23,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:13:23,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:23,851 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2020-08-19 05:13:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:24,080 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-08-19 05:13:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:13:24,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-19 05:13:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:24,082 INFO L225 Difference]: With dead ends: 85 [2020-08-19 05:13:24,082 INFO L226 Difference]: Without dead ends: 83 [2020-08-19 05:13:24,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:24,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-08-19 05:13:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2020-08-19 05:13:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-08-19 05:13:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-08-19 05:13:24,096 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-08-19 05:13:24,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:24,098 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-08-19 05:13:24,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:13:24,099 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-08-19 05:13:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 05:13:24,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:24,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:24,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:13:24,101 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-08-19 05:13:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:24,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718935134] [2020-08-19 05:13:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:24,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718935134] [2020-08-19 05:13:24,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:24,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:24,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657110935] [2020-08-19 05:13:24,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:24,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:24,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:24,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:24,199 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-08-19 05:13:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:24,340 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-08-19 05:13:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:24,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 05:13:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:24,341 INFO L225 Difference]: With dead ends: 83 [2020-08-19 05:13:24,342 INFO L226 Difference]: Without dead ends: 79 [2020-08-19 05:13:24,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-08-19 05:13:24,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-08-19 05:13:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 05:13:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-08-19 05:13:24,349 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-08-19 05:13:24,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:24,349 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-08-19 05:13:24,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:24,349 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-08-19 05:13:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 05:13:24,350 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:24,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:24,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:13:24,351 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:24,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:24,351 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-08-19 05:13:24,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:24,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281684254] [2020-08-19 05:13:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:24,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281684254] [2020-08-19 05:13:24,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:24,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:13:24,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409313958] [2020-08-19 05:13:24,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:13:24,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:13:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:24,424 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 6 states. [2020-08-19 05:13:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:24,607 INFO L93 Difference]: Finished difference Result 136 states and 152 transitions. [2020-08-19 05:13:24,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:13:24,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-08-19 05:13:24,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:24,610 INFO L225 Difference]: With dead ends: 136 [2020-08-19 05:13:24,610 INFO L226 Difference]: Without dead ends: 116 [2020-08-19 05:13:24,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:13:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-08-19 05:13:24,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 75. [2020-08-19 05:13:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 05:13:24,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2020-08-19 05:13:24,629 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2020-08-19 05:13:24,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:24,629 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2020-08-19 05:13:24,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:13:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2020-08-19 05:13:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 05:13:24,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:24,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:13:24,633 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:24,633 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-08-19 05:13:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:24,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838357886] [2020-08-19 05:13:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:24,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838357886] [2020-08-19 05:13:24,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:24,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:24,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929929997] [2020-08-19 05:13:24,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:24,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:24,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:24,713 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand 4 states. [2020-08-19 05:13:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:24,829 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2020-08-19 05:13:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:24,830 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-19 05:13:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:24,831 INFO L225 Difference]: With dead ends: 141 [2020-08-19 05:13:24,832 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 05:13:24,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 05:13:24,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2020-08-19 05:13:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 05:13:24,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 05:13:24,848 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 24 [2020-08-19 05:13:24,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:24,849 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 05:13:24,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:24,852 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 05:13:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:13:24,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:24,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:24,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:13:24,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:24,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-08-19 05:13:24,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:24,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732858043] [2020-08-19 05:13:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:24,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732858043] [2020-08-19 05:13:24,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:24,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:24,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821372561] [2020-08-19 05:13:24,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:24,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:24,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:24,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:24,912 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 4 states. [2020-08-19 05:13:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:25,146 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-08-19 05:13:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:25,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 05:13:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:25,148 INFO L225 Difference]: With dead ends: 78 [2020-08-19 05:13:25,148 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 05:13:25,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 05:13:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-08-19 05:13:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 05:13:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 05:13:25,155 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 25 [2020-08-19 05:13:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:25,155 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 05:13:25,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 05:13:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 05:13:25,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:25,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:25,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:13:25,157 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:25,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:25,157 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-08-19 05:13:25,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:25,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893558411] [2020-08-19 05:13:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:25,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893558411] [2020-08-19 05:13:25,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:25,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:13:25,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139852188] [2020-08-19 05:13:25,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:13:25,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:25,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:13:25,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:25,200 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 5 states. [2020-08-19 05:13:25,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:25,372 INFO L93 Difference]: Finished difference Result 194 states and 222 transitions. [2020-08-19 05:13:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:13:25,373 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 05:13:25,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:25,374 INFO L225 Difference]: With dead ends: 194 [2020-08-19 05:13:25,374 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 05:13:25,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 05:13:25,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 78. [2020-08-19 05:13:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 05:13:25,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2020-08-19 05:13:25,380 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 27 [2020-08-19 05:13:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:25,381 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2020-08-19 05:13:25,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:13:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2020-08-19 05:13:25,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 05:13:25,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:25,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:25,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:13:25,383 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:25,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-08-19 05:13:25,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:25,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267462609] [2020-08-19 05:13:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:25,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:25,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267462609] [2020-08-19 05:13:25,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:25,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:13:25,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071312186] [2020-08-19 05:13:25,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:13:25,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:25,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:13:25,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:25,443 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand 5 states. [2020-08-19 05:13:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:25,582 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-08-19 05:13:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:13:25,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 05:13:25,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:25,583 INFO L225 Difference]: With dead ends: 79 [2020-08-19 05:13:25,583 INFO L226 Difference]: Without dead ends: 77 [2020-08-19 05:13:25,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-08-19 05:13:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-08-19 05:13:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 05:13:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 87 transitions. [2020-08-19 05:13:25,591 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 87 transitions. Word has length 27 [2020-08-19 05:13:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:25,592 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 87 transitions. [2020-08-19 05:13:25,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:13:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 87 transitions. [2020-08-19 05:13:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:13:25,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:25,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:25,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:13:25,594 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:25,594 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-08-19 05:13:25,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:25,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338624575] [2020-08-19 05:13:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:25,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338624575] [2020-08-19 05:13:25,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:25,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:13:25,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171266619] [2020-08-19 05:13:25,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:13:25,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:25,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:13:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:25,664 INFO L87 Difference]: Start difference. First operand 76 states and 87 transitions. Second operand 6 states. [2020-08-19 05:13:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:26,003 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-08-19 05:13:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:13:26,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-19 05:13:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:26,005 INFO L225 Difference]: With dead ends: 182 [2020-08-19 05:13:26,006 INFO L226 Difference]: Without dead ends: 139 [2020-08-19 05:13:26,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:13:26,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-08-19 05:13:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-08-19 05:13:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 05:13:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-08-19 05:13:26,013 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 28 [2020-08-19 05:13:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:26,013 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-08-19 05:13:26,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:13:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-08-19 05:13:26,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:13:26,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:26,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:26,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:13:26,015 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:26,015 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-08-19 05:13:26,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:26,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [790196199] [2020-08-19 05:13:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:26,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [790196199] [2020-08-19 05:13:26,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:26,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:13:26,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690158921] [2020-08-19 05:13:26,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:13:26,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:26,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:13:26,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:13:26,232 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 8 states. [2020-08-19 05:13:26,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:26,983 INFO L93 Difference]: Finished difference Result 237 states and 265 transitions. [2020-08-19 05:13:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:13:26,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-19 05:13:26,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:26,987 INFO L225 Difference]: With dead ends: 237 [2020-08-19 05:13:26,987 INFO L226 Difference]: Without dead ends: 235 [2020-08-19 05:13:26,988 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 [2020-08-19 05:13:26,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-08-19 05:13:26,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 98. [2020-08-19 05:13:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 05:13:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-08-19 05:13:26,997 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 28 [2020-08-19 05:13:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:26,997 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-08-19 05:13:26,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:13:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-08-19 05:13:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 05:13:26,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:26,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:26,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:13:27,000 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:27,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1932526751, now seen corresponding path program 1 times [2020-08-19 05:13:27,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:27,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820928161] [2020-08-19 05:13:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:13:27,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820928161] [2020-08-19 05:13:27,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:27,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:13:27,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140978543] [2020-08-19 05:13:27,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:13:27,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:27,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:13:27,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:13:27,063 INFO L87 Difference]: Start difference. First operand 98 states and 112 transitions. Second operand 5 states. [2020-08-19 05:13:27,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:27,300 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2020-08-19 05:13:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 05:13:27,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-19 05:13:27,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:27,302 INFO L225 Difference]: With dead ends: 145 [2020-08-19 05:13:27,302 INFO L226 Difference]: Without dead ends: 127 [2020-08-19 05:13:27,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-19 05:13:27,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 119. [2020-08-19 05:13:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 05:13:27,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2020-08-19 05:13:27,311 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 30 [2020-08-19 05:13:27,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:27,312 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2020-08-19 05:13:27,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:13:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2020-08-19 05:13:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 05:13:27,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:27,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:27,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 05:13:27,314 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:27,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash -250794977, now seen corresponding path program 1 times [2020-08-19 05:13:27,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:27,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77562678] [2020-08-19 05:13:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:13:27,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77562678] [2020-08-19 05:13:27,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:27,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:27,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754612387] [2020-08-19 05:13:27,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:27,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:27,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:27,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:27,370 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand 4 states. [2020-08-19 05:13:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:27,520 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2020-08-19 05:13:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:27,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-19 05:13:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:27,522 INFO L225 Difference]: With dead ends: 119 [2020-08-19 05:13:27,522 INFO L226 Difference]: Without dead ends: 117 [2020-08-19 05:13:27,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-08-19 05:13:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-08-19 05:13:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-08-19 05:13:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2020-08-19 05:13:27,530 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 30 [2020-08-19 05:13:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:27,531 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2020-08-19 05:13:27,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2020-08-19 05:13:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 05:13:27,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:27,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:13:27,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 05:13:27,533 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:13:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-08-19 05:13:27,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:27,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833893284] [2020-08-19 05:13:27,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:27,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833893284] [2020-08-19 05:13:27,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:27,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:13:27,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326515953] [2020-08-19 05:13:27,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:13:27,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:13:27,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:13:27,694 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand 8 states. [2020-08-19 05:13:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:28,321 INFO L93 Difference]: Finished difference Result 240 states and 275 transitions. [2020-08-19 05:13:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:13:28,321 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-19 05:13:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:28,323 INFO L225 Difference]: With dead ends: 240 [2020-08-19 05:13:28,323 INFO L226 Difference]: Without dead ends: 238 [2020-08-19 05:13:28,324 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 [2020-08-19 05:13:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-08-19 05:13:28,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 120. [2020-08-19 05:13:28,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 05:13:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-08-19 05:13:28,333 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 31 [2020-08-19 05:13:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:28,333 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-08-19 05:13:28,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:13:28,333 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-08-19 05:13:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 05:13:28,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:28,335 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] [2020-08-19 05:13:28,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 05:13:28,335 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]=== [2020-08-19 05:13:28,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:28,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-08-19 05:13:28,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:28,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920794124] [2020-08-19 05:13:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:28,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920794124] [2020-08-19 05:13:28,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:13:28,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 05:13:28,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228747094] [2020-08-19 05:13:28,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:13:28,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:28,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:13:28,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:28,398 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 6 states. [2020-08-19 05:13:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:28,719 INFO L93 Difference]: Finished difference Result 207 states and 241 transitions. [2020-08-19 05:13:28,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:13:28,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 05:13:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:28,721 INFO L225 Difference]: With dead ends: 207 [2020-08-19 05:13:28,721 INFO L226 Difference]: Without dead ends: 145 [2020-08-19 05:13:28,722 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 [2020-08-19 05:13:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-19 05:13:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 122. [2020-08-19 05:13:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-08-19 05:13:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2020-08-19 05:13:28,730 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 33 [2020-08-19 05:13:28,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:28,731 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2020-08-19 05:13:28,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:13:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2020-08-19 05:13:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 05:13:28,732 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:28,732 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] [2020-08-19 05:13:28,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 05:13:28,732 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]=== [2020-08-19 05:13:28,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:28,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-08-19 05:13:28,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:28,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104115064] [2020-08-19 05:13:28,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:28,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:28,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104115064] [2020-08-19 05:13:28,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:28,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 05:13:28,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333484904] [2020-08-19 05:13:28,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:13:28,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:28,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:13:28,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:13:28,826 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand 7 states. [2020-08-19 05:13:29,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:29,135 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2020-08-19 05:13:29,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:13:29,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-08-19 05:13:29,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:29,138 INFO L225 Difference]: With dead ends: 198 [2020-08-19 05:13:29,139 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 05:13:29,140 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 [2020-08-19 05:13:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 05:13:29,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 132. [2020-08-19 05:13:29,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-08-19 05:13:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-08-19 05:13:29,161 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 33 [2020-08-19 05:13:29,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:29,164 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-08-19 05:13:29,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:13:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-08-19 05:13:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-08-19 05:13:29,167 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:29,168 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] [2020-08-19 05:13:29,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 05:13:29,169 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]=== [2020-08-19 05:13:29,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-08-19 05:13:29,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:29,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324367306] [2020-08-19 05:13:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:29,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:13:29,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324367306] [2020-08-19 05:13:29,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:29,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:13:29,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752652134] [2020-08-19 05:13:29,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:13:29,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:29,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:13:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:29,274 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 6 states. [2020-08-19 05:13:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:29,488 INFO L93 Difference]: Finished difference Result 182 states and 208 transitions. [2020-08-19 05:13:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:13:29,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-08-19 05:13:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:29,490 INFO L225 Difference]: With dead ends: 182 [2020-08-19 05:13:29,490 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 05:13:29,494 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 [2020-08-19 05:13:29,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 05:13:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 152. [2020-08-19 05:13:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-19 05:13:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 179 transitions. [2020-08-19 05:13:29,506 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 179 transitions. Word has length 33 [2020-08-19 05:13:29,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:29,506 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 179 transitions. [2020-08-19 05:13:29,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:13:29,506 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 179 transitions. [2020-08-19 05:13:29,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 05:13:29,507 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:29,507 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] [2020-08-19 05:13:29,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 05:13:29,508 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]=== [2020-08-19 05:13:29,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:29,508 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-08-19 05:13:29,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:29,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75332141] [2020-08-19 05:13:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:29,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:29,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75332141] [2020-08-19 05:13:29,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:13:29,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 05:13:29,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864455577] [2020-08-19 05:13:29,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:13:29,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:29,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:13:29,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:13:29,618 INFO L87 Difference]: Start difference. First operand 152 states and 179 transitions. Second operand 7 states. [2020-08-19 05:13:29,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:29,951 INFO L93 Difference]: Finished difference Result 241 states and 276 transitions. [2020-08-19 05:13:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:13:29,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-19 05:13:29,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:29,952 INFO L225 Difference]: With dead ends: 241 [2020-08-19 05:13:29,953 INFO L226 Difference]: Without dead ends: 210 [2020-08-19 05:13:29,953 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 [2020-08-19 05:13:29,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-08-19 05:13:29,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 169. [2020-08-19 05:13:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-19 05:13:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 202 transitions. [2020-08-19 05:13:29,964 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 202 transitions. Word has length 36 [2020-08-19 05:13:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:29,964 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 202 transitions. [2020-08-19 05:13:29,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:13:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 202 transitions. [2020-08-19 05:13:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 05:13:29,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:29,966 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] [2020-08-19 05:13:29,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 05:13:29,968 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]=== [2020-08-19 05:13:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:29,968 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-08-19 05:13:29,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:29,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717827038] [2020-08-19 05:13:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:30,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:30,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:30,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717827038] [2020-08-19 05:13:30,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:30,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:13:30,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288692516] [2020-08-19 05:13:30,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:13:30,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:30,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:13:30,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:30,055 INFO L87 Difference]: Start difference. First operand 169 states and 202 transitions. Second operand 4 states. [2020-08-19 05:13:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:30,220 INFO L93 Difference]: Finished difference Result 354 states and 437 transitions. [2020-08-19 05:13:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:13:30,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-08-19 05:13:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:30,223 INFO L225 Difference]: With dead ends: 354 [2020-08-19 05:13:30,223 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 05:13:30,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:13:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 05:13:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 218. [2020-08-19 05:13:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-19 05:13:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2020-08-19 05:13:30,241 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 36 [2020-08-19 05:13:30,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:30,241 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2020-08-19 05:13:30,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:13:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2020-08-19 05:13:30,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 05:13:30,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:30,243 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] [2020-08-19 05:13:30,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 05:13:30,243 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]=== [2020-08-19 05:13:30,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-08-19 05:13:30,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:30,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1799467815] [2020-08-19 05:13:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:30,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:30,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:30,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:30,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1799467815] [2020-08-19 05:13:30,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:13:30,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:13:30,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032700996] [2020-08-19 05:13:30,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:13:30,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:30,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:13:30,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:13:30,477 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand 10 states. [2020-08-19 05:13:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:31,198 INFO L93 Difference]: Finished difference Result 430 states and 511 transitions. [2020-08-19 05:13:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:13:31,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 05:13:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:31,200 INFO L225 Difference]: With dead ends: 430 [2020-08-19 05:13:31,200 INFO L226 Difference]: Without dead ends: 338 [2020-08-19 05:13:31,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:13:31,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-08-19 05:13:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 235. [2020-08-19 05:13:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-08-19 05:13:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2020-08-19 05:13:31,216 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 40 [2020-08-19 05:13:31,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:31,218 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2020-08-19 05:13:31,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:13:31,218 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2020-08-19 05:13:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 05:13:31,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:31,219 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] [2020-08-19 05:13:31,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 05:13:31,219 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]=== [2020-08-19 05:13:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:31,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-08-19 05:13:31,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:31,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600193294] [2020-08-19 05:13:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:31,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600193294] [2020-08-19 05:13:31,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:13:31,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:13:31,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771582849] [2020-08-19 05:13:31,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:13:31,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:31,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:13:31,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:13:31,297 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand 6 states. [2020-08-19 05:13:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:31,485 INFO L93 Difference]: Finished difference Result 353 states and 426 transitions. [2020-08-19 05:13:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:13:31,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-08-19 05:13:31,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:31,488 INFO L225 Difference]: With dead ends: 353 [2020-08-19 05:13:31,488 INFO L226 Difference]: Without dead ends: 244 [2020-08-19 05:13:31,489 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 [2020-08-19 05:13:31,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-08-19 05:13:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 237. [2020-08-19 05:13:31,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2020-08-19 05:13:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2020-08-19 05:13:31,503 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 40 [2020-08-19 05:13:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:31,503 INFO L479 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2020-08-19 05:13:31,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:13:31,504 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2020-08-19 05:13:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 05:13:31,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:31,505 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] [2020-08-19 05:13:31,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 05:13:31,505 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]=== [2020-08-19 05:13:31,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-08-19 05:13:31,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:31,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429936929] [2020-08-19 05:13:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:31,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:13:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:13:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:13:31,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429936929] [2020-08-19 05:13:31,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:13:31,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:13:31,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828253160] [2020-08-19 05:13:31,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:13:31,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:13:31,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:13:31,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:13:31,735 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand 10 states. [2020-08-19 05:13:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:13:32,391 INFO L93 Difference]: Finished difference Result 441 states and 526 transitions. [2020-08-19 05:13:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:13:32,391 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-08-19 05:13:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:13:32,393 INFO L225 Difference]: With dead ends: 441 [2020-08-19 05:13:32,394 INFO L226 Difference]: Without dead ends: 349 [2020-08-19 05:13:32,395 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 [2020-08-19 05:13:32,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-08-19 05:13:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 239. [2020-08-19 05:13:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 05:13:32,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2020-08-19 05:13:32,409 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 40 [2020-08-19 05:13:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:13:32,410 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2020-08-19 05:13:32,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:13:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2020-08-19 05:13:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 05:13:32,411 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:13:32,411 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] [2020-08-19 05:13:32,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 05:13:32,411 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]=== [2020-08-19 05:13:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:13:32,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-08-19 05:13:32,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:13:32,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978889769] [2020-08-19 05:13:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:13:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:13:32,452 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:13:32,452 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:13:32,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 05:13:32,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:13:32 BoogieIcfgContainer [2020-08-19 05:13:32,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:13:32,479 INFO L168 Benchmark]: Toolchain (without parser) took 11613.13 ms. Allocated memory was 148.4 MB in the beginning and 325.6 MB in the end (delta: 177.2 MB). Free memory was 102.8 MB in the beginning and 247.0 MB in the end (delta: -144.2 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:13:32,479 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:13:32,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.44 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 172.9 MB in the end (delta: -70.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:13:32,480 INFO L168 Benchmark]: Boogie Preprocessor took 95.49 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:13:32,481 INFO L168 Benchmark]: RCFGBuilder took 749.23 ms. Allocated memory is still 205.5 MB. Free memory was 168.6 MB in the beginning and 113.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-08-19 05:13:32,481 INFO L168 Benchmark]: TraceAbstraction took 10172.46 ms. Allocated memory was 205.5 MB in the beginning and 325.6 MB in the end (delta: 120.1 MB). Free memory was 112.4 MB in the beginning and 247.0 MB in the end (delta: -134.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:13:32,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 591.44 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 102.6 MB in the beginning and 172.9 MB in the end (delta: -70.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.49 ms. Allocated memory is still 205.5 MB. Free memory was 172.2 MB in the beginning and 168.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 749.23 ms. Allocated memory is still 205.5 MB. Free memory was 168.6 MB in the beginning and 113.0 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10172.46 ms. Allocated memory was 205.5 MB in the beginning and 325.6 MB in the end (delta: 120.1 MB). Free memory was 112.4 MB in the beginning and 247.0 MB in the end (delta: -134.7 MB). There was no memory consumed. 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: 10.0s, 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, 2.1s 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, 1.8s 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...