/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:31:41,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:31:41,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:31:41,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:31:41,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:31:41,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:31:41,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:31:41,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:31:41,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:31:41,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:31:41,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:31:41,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:31:41,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:31:41,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:31:41,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:31:41,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:31:41,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:31:41,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:31:41,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:31:41,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:31:41,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:31:41,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:31:41,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:31:41,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:31:41,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:31:41,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:31:41,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:31:41,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:31:41,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:31:41,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:31:41,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:31:41,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:31:41,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:31:41,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:31:41,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:31:41,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:31:41,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:31:41,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:31:41,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:31:41,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:31:41,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:31:41,638 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 [2020-10-14 23:31:41,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:31:41,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:31:41,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:31:41,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:31:41,664 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:31:41,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:31:41,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:31:41,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:31:41,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:31:41,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:31:41,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:31:41,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:31:41,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:31:41,665 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:31:41,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:31:41,666 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:31:41,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:31:41,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:31:41,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:31:41,667 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:31:41,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:31:41,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:31:41,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:31:41,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:31:41,669 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:31:42,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:31:42,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:31:42,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:31:42,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:31:42,033 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:31:42,033 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-14 23:31:42,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a554d41/bcbec0cbae7f404f8b2c300ff9634b1a/FLAGb9c449d11 [2020-10-14 23:31:42,631 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:31:42,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-14 23:31:42,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a554d41/bcbec0cbae7f404f8b2c300ff9634b1a/FLAGb9c449d11 [2020-10-14 23:31:42,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5a554d41/bcbec0cbae7f404f8b2c300ff9634b1a [2020-10-14 23:31:42,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:31:42,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:31:42,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:31:42,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:31:42,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:31:42,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:31:42" (1/1) ... [2020-10-14 23:31:42,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e1fda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:42, skipping insertion in model container [2020-10-14 23:31:42,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:31:42" (1/1) ... [2020-10-14 23:31:42,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:31:43,018 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:31:43,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:31:43,461 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:31:43,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:31:43,611 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:31:43,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43 WrapperNode [2020-10-14 23:31:43,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:31:43,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:31:43,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:31:43,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:31:43,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (1/1) ... [2020-10-14 23:31:43,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:31:43,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:31:43,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:31:43,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:31:43,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (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 [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:31:43,753 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 23:31:43,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:31:43,754 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:31:43,755 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:31:43,756 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:31:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:31:43,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:31:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:31:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:31:43,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:31:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:31:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:31:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:31:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:31:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:31:43,761 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:31:43,762 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:31:43,763 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:31:43,764 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:31:43,765 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:31:43,766 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:31:43,767 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:31:43,768 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:31:43,770 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:31:43,771 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:31:43,772 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:31:43,773 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:31:43,774 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:31:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:31:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 23:31:43,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:31:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:31:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:31:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:31:43,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:31:43,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:31:44,092 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:31:44,325 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:31:44,325 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 23:31:44,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:31:44 BoogieIcfgContainer [2020-10-14 23:31:44,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:31:44,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:31:44,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:31:44,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:31:44,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:31:42" (1/3) ... [2020-10-14 23:31:44,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b51b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:31:44, skipping insertion in model container [2020-10-14 23:31:44,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:31:43" (2/3) ... [2020-10-14 23:31:44,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b51b87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:31:44, skipping insertion in model container [2020-10-14 23:31:44,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:31:44" (3/3) ... [2020-10-14 23:31:44,340 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-10-14 23:31:44,351 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:31:44,359 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:31:44,372 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:31:44,397 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:31:44,397 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:31:44,397 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:31:44,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:31:44,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:31:44,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:31:44,402 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:31:44,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:31:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-14 23:31:44,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:31:44,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:44,433 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] [2020-10-14 23:31:44,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash 248267832, now seen corresponding path program 1 times [2020-10-14 23:31:44,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:44,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764700469] [2020-10-14 23:31:44,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:44,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:45,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:45,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:31:45,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:31:45,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-10-14 23:31:45,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:45,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:31:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:31:45,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:31:45,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:31:45,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:31:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:45,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:45,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:31:45,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:45,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:31:45,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:45,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:45,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:31:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:31:45,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:31:45,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:45,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:31:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:45,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:45,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:31:45,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:45,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:31:45,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:45,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:31:45,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:31:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:31:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:31:45,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764700469] [2020-10-14 23:31:45,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:31:45,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 23:31:45,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579633210] [2020-10-14 23:31:45,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:31:45,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:31:45,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:31:45,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:31:45,257 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2020-10-14 23:31:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:31:45,573 INFO L93 Difference]: Finished difference Result 73 states and 101 transitions. [2020-10-14 23:31:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:31:45,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 23:31:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:31:45,584 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:31:45,584 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:31:45,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:31:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:31:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-10-14 23:31:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:31:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2020-10-14 23:31:45,631 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 20 [2020-10-14 23:31:45,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:31:45,632 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2020-10-14 23:31:45,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:31:45,632 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2020-10-14 23:31:45,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:31:45,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:45,634 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] [2020-10-14 23:31:45,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:31:45,634 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:45,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:45,635 INFO L82 PathProgramCache]: Analyzing trace with hash 215856973, now seen corresponding path program 1 times [2020-10-14 23:31:45,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:45,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827225006] [2020-10-14 23:31:45,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:45,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:46,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:31:46,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:31:46,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-14 23:31:46,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:46,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:46,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:31:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:31:46,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:31:46,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:46,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:31:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:31:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:31:46,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:46,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:31:46,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:31:46,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:31:46,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:31:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:31:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:46,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:31:46,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:31:46,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 23:31:46,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:46,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:46,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:31:46,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:31:46,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:31:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:31:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:31:46,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827225006] [2020-10-14 23:31:46,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:31:46,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:31:46,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023223044] [2020-10-14 23:31:46,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:31:46,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:31:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:31:46,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:31:46,433 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand 8 states. [2020-10-14 23:31:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:31:46,646 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2020-10-14 23:31:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:31:46,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-10-14 23:31:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:31:46,648 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:31:46,648 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:31:46,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:31:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:31:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-10-14 23:31:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:31:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-14 23:31:46,667 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 27 [2020-10-14 23:31:46,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:31:46,668 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-14 23:31:46,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:31:46,668 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-14 23:31:46,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:31:46,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:46,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:31:46,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:31:46,671 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:46,672 INFO L82 PathProgramCache]: Analyzing trace with hash -162688360, now seen corresponding path program 2 times [2020-10-14 23:31:46,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:46,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59308611] [2020-10-14 23:31:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:46,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:31:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:31:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-14 23:31:48,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:48,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:31:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:31:48,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:31:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:31:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:48,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:31:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:31:48,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:48,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:31:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:31:48,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:31:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:31:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:49,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:49,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:31:49,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:31:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 23:31:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:49,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:31:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:31:49,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:31:49,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:31:49,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59308611] [2020-10-14 23:31:49,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:31:49,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:31:49,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311230819] [2020-10-14 23:31:49,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:31:49,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:31:49,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:31:49,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:31:49,214 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 9 states. [2020-10-14 23:31:49,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:31:49,557 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2020-10-14 23:31:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:31:49,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 23:31:49,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:31:49,560 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:31:49,560 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:31:49,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:31:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:31:49,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-10-14 23:31:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:31:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2020-10-14 23:31:49,570 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 34 [2020-10-14 23:31:49,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:31:49,571 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2020-10-14 23:31:49,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:31:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2020-10-14 23:31:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:31:49,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:49,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:31:49,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:31:49,573 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:49,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:49,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1918467309, now seen corresponding path program 3 times [2020-10-14 23:31:49,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:49,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647068927] [2020-10-14 23:31:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:49,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:49,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:51,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:53,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:53,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:31:53,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:31:53,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3537 [2020-10-14 23:31:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:53,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:31:53,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:31:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:31:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:53,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:31:53,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:53,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:53,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:53,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:31:53,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:53,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:31:53,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:53,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:31:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:31:53,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:31:53,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:31:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:53,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:53,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:53,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:31:53,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:31:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 23:31:53,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:53,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:31:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:31:53,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:31:53,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:31:53,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647068927] [2020-10-14 23:31:53,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:31:53,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:31:53,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301562340] [2020-10-14 23:31:53,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:31:53,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:31:53,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:31:53,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:31:53,566 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand 10 states. [2020-10-14 23:31:53,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:31:53,789 INFO L93 Difference]: Finished difference Result 77 states and 101 transitions. [2020-10-14 23:31:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:31:53,789 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-14 23:31:53,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:31:53,791 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:31:53,791 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:31:53,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:31:53,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:31:53,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 23:31:53,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:31:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-10-14 23:31:53,800 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 41 [2020-10-14 23:31:53,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:31:53,800 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-10-14 23:31:53,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:31:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-10-14 23:31:53,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 23:31:53,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:53,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:31:53,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:31:53,803 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:53,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1263126280, now seen corresponding path program 4 times [2020-10-14 23:31:53,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:53,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137226994] [2020-10-14 23:31:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:53,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:31:57,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:31:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3991 [2020-10-14 23:31:57,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:57,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:31:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:31:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:31:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:31:57,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:31:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:57,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:57,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:31:57,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:31:57,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:31:57,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:57,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:31:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:31:57,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:31:57,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:31:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:31:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:57,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:58,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:31:58,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:31:58,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:31:58,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 23:31:58,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:31:58,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:31:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:31:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:31:58,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:31:58,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:31:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:31:58,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137226994] [2020-10-14 23:31:58,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:31:58,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:31:58,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893719004] [2020-10-14 23:31:58,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:31:58,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:31:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:31:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:31:58,432 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 11 states. [2020-10-14 23:31:58,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:31:58,681 INFO L93 Difference]: Finished difference Result 84 states and 110 transitions. [2020-10-14 23:31:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:31:58,681 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-14 23:31:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:31:58,683 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:31:58,683 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:31:58,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:31:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:31:58,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-14 23:31:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 23:31:58,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2020-10-14 23:31:58,697 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 48 [2020-10-14 23:31:58,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:31:58,699 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2020-10-14 23:31:58,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:31:58,700 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2020-10-14 23:31:58,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:31:58,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:31:58,702 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:31:58,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:31:58,703 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:31:58,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:31:58,703 INFO L82 PathProgramCache]: Analyzing trace with hash 645589645, now seen corresponding path program 5 times [2020-10-14 23:31:58,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:31:58,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549226084] [2020-10-14 23:31:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:31:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:31:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:58,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:31:58,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:00,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:00,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:32:00,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:32:00,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1812 [2020-10-14 23:32:00,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:00,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:32:00,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 23:32:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:32:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:32:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:00,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:00,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:00,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:00,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:00,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:00,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:00,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:00,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:00,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:00,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:32:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:00,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:01,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:01,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:32:01,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:32:01,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-14 23:32:01,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:01,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:32:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:01,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:32:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-14 23:32:01,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1549226084] [2020-10-14 23:32:01,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:32:01,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:32:01,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930579902] [2020-10-14 23:32:01,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:32:01,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:01,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:32:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:32:01,763 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 14 states. [2020-10-14 23:32:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:02,263 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2020-10-14 23:32:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:32:02,264 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-14 23:32:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:02,265 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:32:02,265 INFO L226 Difference]: Without dead ends: 74 [2020-10-14 23:32:02,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:32:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-14 23:32:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-14 23:32:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:32:02,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2020-10-14 23:32:02,274 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 55 [2020-10-14 23:32:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:02,274 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2020-10-14 23:32:02,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:32:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2020-10-14 23:32:02,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:32:02,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:02,276 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:02,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:32:02,276 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:02,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:02,277 INFO L82 PathProgramCache]: Analyzing trace with hash 647436687, now seen corresponding path program 1 times [2020-10-14 23:32:02,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:02,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949295994] [2020-10-14 23:32:02,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:02,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:32:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 23:32:02,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:02,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:32:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:32:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:02,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:32:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:02,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:02,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:32:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:32:02,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:02,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:02,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:32:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:32:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:32:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:02,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:32:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:32:02,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:32:02,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:32:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:32:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:32:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 23:32:02,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:32:02,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:32:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:32:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-14 23:32:02,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949295994] [2020-10-14 23:32:02,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:32:02,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:32:02,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11838539] [2020-10-14 23:32:02,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:32:02,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:32:02,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:32:02,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:32:02,610 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand 5 states. [2020-10-14 23:32:02,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:32:02,753 INFO L93 Difference]: Finished difference Result 118 states and 152 transitions. [2020-10-14 23:32:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:32:02,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-10-14 23:32:02,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:32:02,754 INFO L225 Difference]: With dead ends: 118 [2020-10-14 23:32:02,755 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:32:02,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:32:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:32:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2020-10-14 23:32:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 23:32:02,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 81 transitions. [2020-10-14 23:32:02,771 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 81 transitions. Word has length 55 [2020-10-14 23:32:02,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:32:02,771 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 81 transitions. [2020-10-14 23:32:02,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:32:02,771 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 81 transitions. [2020-10-14 23:32:02,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:32:02,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:32:02,773 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:32:02,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:32:02,773 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:32:02,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:32:02,773 INFO L82 PathProgramCache]: Analyzing trace with hash 895583181, now seen corresponding path program 1 times [2020-10-14 23:32:02,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:32:02,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711211560] [2020-10-14 23:32:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:32:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:32:02,809 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:32:02,809 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:32:02,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:32:02,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:32:02 BoogieIcfgContainer [2020-10-14 23:32:02,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:32:02,839 INFO L168 Benchmark]: Toolchain (without parser) took 19886.82 ms. Allocated memory was 146.3 MB in the beginning and 551.0 MB in the end (delta: 404.8 MB). Free memory was 101.0 MB in the beginning and 494.0 MB in the end (delta: -393.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:32:02,840 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. [2020-10-14 23:32:02,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.20 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.5 MB in the beginning and 168.6 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:32:02,841 INFO L168 Benchmark]: Boogie Preprocessor took 70.74 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 165.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:32:02,842 INFO L168 Benchmark]: RCFGBuilder took 648.43 ms. Allocated memory is still 202.4 MB. Free memory was 165.8 MB in the beginning and 119.6 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:32:02,843 INFO L168 Benchmark]: TraceAbstraction took 18501.73 ms. Allocated memory was 202.4 MB in the beginning and 551.0 MB in the end (delta: 348.7 MB). Free memory was 118.7 MB in the beginning and 494.0 MB in the end (delta: -375.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:32:02,847 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 420.0 kB). Peak memory consumption was 420.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.20 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 100.5 MB in the beginning and 168.6 MB in the end (delta: -68.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.74 ms. Allocated memory is still 202.4 MB. Free memory was 168.6 MB in the beginning and 165.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.43 ms. Allocated memory is still 202.4 MB. Free memory was 165.8 MB in the beginning and 119.6 MB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18501.73 ms. Allocated memory was 202.4 MB in the beginning and 551.0 MB in the end (delta: 348.7 MB). Free memory was 118.7 MB in the beginning and 494.0 MB in the end (delta: -375.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] return head; [L589] RET, EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] head->next [L590] COND TRUE head->next [L591] EXPR head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.4s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 261 SDtfs, 324 SDslu, 1062 SDs, 0 SdLazy, 945 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 44 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 273 ConstructedInterpolants, 0 QuantifiedInterpolants, 37542 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 143/230 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...