/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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:04:43,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:04:43,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:04:43,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:04:43,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:04:43,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:04:43,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:04:43,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:04:43,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:04:43,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:04:43,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:04:43,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:04:43,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:04:43,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:04:43,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:04:43,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:04:43,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:04:43,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:04:43,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:04:43,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:04:43,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:04:43,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:04:43,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:04:43,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:04:43,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:04:43,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:04:43,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:04:43,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:04:43,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:04:43,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:04:43,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:04:43,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:04:43,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:04:43,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:04:43,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:04:43,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:04:43,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:04:43,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:04:43,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:04:43,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:04:43,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:04:43,668 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 [2020-09-25 02:04:43,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:04:43,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:04:43,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:04:43,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:04:43,713 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:04:43,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:04:43,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:04:43,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:04:43,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:04:43,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:04:43,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:04:43,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:04:43,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:04:43,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:04:43,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:04:43,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:04:43,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:04:43,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:04:43,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:04:43,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:04:43,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:04:43,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:04:43,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:04:43,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:04:43,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:04:43,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:04:43,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:04:43,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:04:43,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:04:43,720 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:04:44,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:04:44,208 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:04:44,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:04:44,214 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:04:44,215 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:04:44,216 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 02:04:44,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2139fc3/c3a92e91fbdb48a995e389618b9dfda2/FLAG88c4e255d [2020-09-25 02:04:44,887 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:04:44,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 02:04:44,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2139fc3/c3a92e91fbdb48a995e389618b9dfda2/FLAG88c4e255d [2020-09-25 02:04:45,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fe2139fc3/c3a92e91fbdb48a995e389618b9dfda2 [2020-09-25 02:04:45,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:04:45,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:04:45,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:45,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:04:45,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:04:45,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45, skipping insertion in model container [2020-09-25 02:04:45,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:04:45,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:04:45,506 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 02:04:45,509 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 02:04:45,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:45,544 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:04:45,675 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 02:04:45,676 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 02:04:45,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:04:45,729 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:04:45,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45 WrapperNode [2020-09-25 02:04:45,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:04:45,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:04:45,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:04:45,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:04:45,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (1/1) ... [2020-09-25 02:04:45,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:04:45,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:04:45,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:04:45,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:04:45,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (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 [2020-09-25 02:04:45,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:04:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:04:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 02:04:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:04:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 02:04:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 02:04:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 02:04:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 02:04:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 02:04:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 02:04:45,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:04:45,881 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 02:04:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:04:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:04:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:04:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:04:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 02:04:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 02:04:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:04:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 02:04:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 02:04:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 02:04:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:04:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 02:04:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:04:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:04:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:04:46,571 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:04:46,572 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 02:04:46,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:46 BoogieIcfgContainer [2020-09-25 02:04:46,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:04:46,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:04:46,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:04:46,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:04:46,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:04:45" (1/3) ... [2020-09-25 02:04:46,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:46, skipping insertion in model container [2020-09-25 02:04:46,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:04:45" (2/3) ... [2020-09-25 02:04:46,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:04:46, skipping insertion in model container [2020-09-25 02:04:46,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:04:46" (3/3) ... [2020-09-25 02:04:46,590 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-25 02:04:46,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:04:46,614 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:04:46,635 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:04:46,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:04:46,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:04:46,666 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:04:46,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:04:46,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:04:46,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:04:46,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:04:46,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:04:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-25 02:04:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 02:04:46,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:46,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:46,707 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:46,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:46,714 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-25 02:04:46,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:46,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-25 02:04:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 02:04:47,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-09-25 02:04:47,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 02:04:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 02:04:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:04:47,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:47,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:47,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:47,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:04:47,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:47,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:47,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:47,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 02:04:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:47,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:04:47,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:47,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 02:04:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:47,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:47,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 02:04:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:04:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:47,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 02:04:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 02:04:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:48,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:48,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:48,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:48,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 02:04:48,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:48,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:48,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 02:04:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:48,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:48,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:48,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:04:48,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:48,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:48,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:48,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:04:48,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:48,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:04:48,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-25 02:04:48,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:04:48,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:04:48,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030280000] [2020-09-25 02:04:48,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:04:48,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:48,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:04:48,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:04:48,150 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-25 02:04:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:49,456 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-25 02:04:49,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:49,458 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 02:04:49,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:49,486 INFO L225 Difference]: With dead ends: 333 [2020-09-25 02:04:49,487 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 02:04:49,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:04:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 02:04:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-25 02:04:49,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 02:04:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-25 02:04:49,644 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-25 02:04:49,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:49,646 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-25 02:04:49,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:04:49,646 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-25 02:04:49,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 02:04:49,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:49,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:49,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:04:49,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:49,664 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-25 02:04:49,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:49,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946087875] [2020-09-25 02:04:49,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:49,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:49,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 02:04:54,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:04:54,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-09-25 02:04:54,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:04:54,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 02:04:54,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:04:54,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:04:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:04:54,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 02:04:54,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 02:04:54,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:04:54,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 02:04:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:04:54,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 02:04:54,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:54,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:04:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:04:54,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:04:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:04:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:54,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:54,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:04:54,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 02:04:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:54,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:04:54,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 02:04:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:04:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 02:04:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 02:04:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:54,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:54,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:54,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:04:54,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 02:04:54,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946087875] [2020-09-25 02:04:54,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:54,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:04:54,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993688606] [2020-09-25 02:04:54,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:04:54,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:54,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:04:54,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:04:54,823 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-25 02:04:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:04:56,005 INFO L93 Difference]: Finished difference Result 321 states and 368 transitions. [2020-09-25 02:04:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:04:56,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 02:04:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:04:56,009 INFO L225 Difference]: With dead ends: 321 [2020-09-25 02:04:56,009 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 02:04:56,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:04:56,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 02:04:56,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 182. [2020-09-25 02:04:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-25 02:04:56,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-09-25 02:04:56,051 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 80 [2020-09-25 02:04:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:04:56,052 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-09-25 02:04:56,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:04:56,052 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-09-25 02:04:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 02:04:56,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:04:56,055 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:04:56,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:04:56,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:04:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:04:56,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1499275550, now seen corresponding path program 1 times [2020-09-25 02:04:56,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:04:56,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948417772] [2020-09-25 02:04:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:04:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:57,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 02:04:59,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:04:59,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2992 [2020-09-25 02:04:59,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:04:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:04:59,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 02:04:59,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:04:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:59,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:04:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:04:59,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:04:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:04:59,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 02:04:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:04:59,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 02:04:59,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:04:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:04:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 02:04:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:04:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:04:59,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:04:59,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:59,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 02:04:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 02:04:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:04:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:04:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:59,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 02:04:59,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:04:59,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:04:59,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:04:59,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:04:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:59,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:04:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:04:59,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:04:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:04:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:04:59,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 02:04:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:04:59,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:04:59,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:04:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 02:04:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:04:59,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:04:59,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 02:04:59,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 02:04:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:04:59,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:04:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:04:59,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:04:59,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:04:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:04:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:04:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:04:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 02:04:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:04:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:04:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:04:59,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948417772] [2020-09-25 02:04:59,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:04:59,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:04:59,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455069396] [2020-09-25 02:04:59,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:04:59,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:04:59,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:04:59,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:04:59,500 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 12 states. [2020-09-25 02:05:00,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:00,558 INFO L93 Difference]: Finished difference Result 323 states and 370 transitions. [2020-09-25 02:05:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:05:00,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 106 [2020-09-25 02:05:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:00,563 INFO L225 Difference]: With dead ends: 323 [2020-09-25 02:05:00,563 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 02:05:00,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:05:00,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 02:05:00,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 184. [2020-09-25 02:05:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 02:05:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2020-09-25 02:05:00,591 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 106 [2020-09-25 02:05:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:00,591 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2020-09-25 02:05:00,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:05:00,591 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2020-09-25 02:05:00,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 02:05:00,593 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:00,594 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:00,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:05:00,594 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:00,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:00,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1431902021, now seen corresponding path program 1 times [2020-09-25 02:05:00,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:00,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594014578] [2020-09-25 02:05:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 02:05:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:05:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 02:05:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:05:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 02:05:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 02:05:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:05:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:05:05,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:05:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 02:05:05,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:05:05,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 02:05:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:05:05,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 02:05:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:05:05,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 02:05:05,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 02:05:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:05,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 02:05:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:05,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:05:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:05:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-25 02:05:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 02:05:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 02:05:05,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:05:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:05:05,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:05:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:05:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:05,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:05,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:05:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 02:05:05,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:05:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 02:05:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:05,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 02:05:06,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:05:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:05:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 02:05:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:05:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:05:06,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:05:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:05:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 02:05:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:06,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 02:05:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:05:06,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:05:06,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:05:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 02:05:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:05:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:05:06,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:05:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:05:06,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:05:06,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:05:06,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:05:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-25 02:05:06,180 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594014578] [2020-09-25 02:05:06,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:05:06,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:05:06,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042793737] [2020-09-25 02:05:06,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:05:06,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:05:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:05:06,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:05:06,184 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand 11 states. [2020-09-25 02:05:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:05:07,197 INFO L93 Difference]: Finished difference Result 305 states and 348 transitions. [2020-09-25 02:05:07,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:05:07,198 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 127 [2020-09-25 02:05:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:05:07,201 INFO L225 Difference]: With dead ends: 305 [2020-09-25 02:05:07,201 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 02:05:07,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:05:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 02:05:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2020-09-25 02:05:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 02:05:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2020-09-25 02:05:07,216 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 127 [2020-09-25 02:05:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:05:07,217 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2020-09-25 02:05:07,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:05:07,217 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2020-09-25 02:05:07,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 02:05:07,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:05:07,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:05:07,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:05:07,220 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:05:07,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:05:07,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-25 02:05:07,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:05:07,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30293470] [2020-09-25 02:05:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:05:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:05:07,267 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:05:07,268 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:05:07,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:05:07,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:05:07 BoogieIcfgContainer [2020-09-25 02:05:07,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:05:07,307 INFO L168 Benchmark]: Toolchain (without parser) took 22084.96 ms. Allocated memory was 147.3 MB in the beginning and 380.6 MB in the end (delta: 233.3 MB). Free memory was 101.5 MB in the beginning and 258.3 MB in the end (delta: -156.8 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:05:07,308 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 02:05:07,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.77 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 181.6 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:05:07,311 INFO L168 Benchmark]: Boogie Preprocessor took 65.93 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 178.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:05:07,312 INFO L168 Benchmark]: RCFGBuilder took 782.85 ms. Allocated memory is still 205.0 MB. Free memory was 178.7 MB in the beginning and 137.0 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:05:07,314 INFO L168 Benchmark]: TraceAbstraction took 20722.60 ms. Allocated memory was 205.0 MB in the beginning and 380.6 MB in the end (delta: 175.6 MB). Free memory was 137.0 MB in the beginning and 258.3 MB in the end (delta: -121.3 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:05:07,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 503.77 ms. Allocated memory was 147.3 MB in the beginning and 205.0 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 181.6 MB in the end (delta: -80.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.93 ms. Allocated memory is still 205.0 MB. Free memory was 181.6 MB in the beginning and 178.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 782.85 ms. Allocated memory is still 205.0 MB. Free memory was 178.7 MB in the beginning and 137.0 MB in the end (delta: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 20722.60 ms. Allocated memory was 205.0 MB in the beginning and 380.6 MB in the end (delta: 175.6 MB). Free memory was 137.0 MB in the beginning and 258.3 MB in the end (delta: -121.3 MB). Peak memory consumption was 54.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 686 SDtfs, 1305 SDslu, 1858 SDs, 0 SdLazy, 3061 SolverSat, 483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 135276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 70/76 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...