/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=WIDEST --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_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:12:35,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:12:35,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:12:35,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:12:35,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:12:35,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:12:35,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:12:35,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:12:35,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:12:35,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:12:35,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:12:35,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:12:35,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:12:35,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:12:35,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:12:35,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:12:35,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:12:35,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:12:35,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:12:35,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:12:35,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:12:35,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:12:35,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:12:35,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:12:35,543 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:12:35,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:12:35,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:12:35,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:12:35,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:12:35,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:12:35,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:12:35,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:12:35,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:12:35,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:12:35,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:12:35,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:12:35,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:12:35,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:12:35,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:12:35,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:12:35,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:12:35,563 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 03:12:35,630 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:12:35,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:12:35,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:12:35,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:12:35,634 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:12:35,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:12:35,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:12:35,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:12:35,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:12:35,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:12:35,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:12:35,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:12:35,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:12:35,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:12:35,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:12:35,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:12:35,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:12:35,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:12:35,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:12:35,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:12:35,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:12:35,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:12:35,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:12:35,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:12:35,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:12:35,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:12:35,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:12:35,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:12:35,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:12:35,640 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:12:36,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:12:36,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:12:36,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:12:36,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:12:36,127 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:12:36,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 03:12:36,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3a80a86/4f2e6a306a194a8ca25fb5333e2ca531/FLAGa0bbc112e [2020-09-25 03:12:36,781 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:12:36,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 03:12:36,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3a80a86/4f2e6a306a194a8ca25fb5333e2ca531/FLAGa0bbc112e [2020-09-25 03:12:37,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3a80a86/4f2e6a306a194a8ca25fb5333e2ca531 [2020-09-25 03:12:37,128 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:12:37,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:12:37,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:12:37,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:12:37,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:12:37,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177c5926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37, skipping insertion in model container [2020-09-25 03:12:37,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:12:37,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:12:37,470 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:37,473 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:37,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:12:37,543 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:12:37,671 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:37,673 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:37,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:12:37,711 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:12:37,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37 WrapperNode [2020-09-25 03:12:37,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:12:37,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:12:37,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:12:37,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:12:37,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (1/1) ... [2020-09-25 03:12:37,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:12:37,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:12:37,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:12:37,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:12:37,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (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 03:12:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:12:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:12:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 03:12:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:12:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 03:12:37,884 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 03:12:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 03:12:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 03:12:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 03:12:37,885 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 03:12:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:12:37,886 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 03:12:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:12:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:12:37,886 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:12:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:12:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:12:37,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:12:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 03:12:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:12:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:12:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 03:12:37,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 03:12:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:12:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:12:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 03:12:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 03:12:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 03:12:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:12:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 03:12:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:12:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:12:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:12:38,508 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:12:38,508 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:12:38,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:12:38 BoogieIcfgContainer [2020-09-25 03:12:38,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:12:38,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:12:38,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:12:38,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:12:38,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:12:37" (1/3) ... [2020-09-25 03:12:38,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d164474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:12:38, skipping insertion in model container [2020-09-25 03:12:38,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:37" (2/3) ... [2020-09-25 03:12:38,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d164474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:12:38, skipping insertion in model container [2020-09-25 03:12:38,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:12:38" (3/3) ... [2020-09-25 03:12:38,537 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-25 03:12:38,550 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:12:38,562 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:12:38,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:12:38,634 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:12:38,634 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:12:38,634 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:12:38,634 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:12:38,634 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:12:38,635 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:12:38,635 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:12:38,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:12:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-25 03:12:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:12:38,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:38,687 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 03:12:38,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-25 03:12:38,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:38,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581063066] [2020-09-25 03:12:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:12:39,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-25 03:12:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:12:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 03:12:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:12:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:12:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:39,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:39,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:39,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:39,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:39,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:39,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:39,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:39,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:12:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:39,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:12:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:39,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:12:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:39,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:12:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:39,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 03:12:39,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:39,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:39,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:12:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:39,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:39,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:39,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:39,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:39,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:12:39,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:39,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:39,987 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 03:12:39,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581063066] [2020-09-25 03:12:39,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:12:39,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:12:39,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399356001] [2020-09-25 03:12:39,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:12:39,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:40,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:12:40,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:12:40,020 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-25 03:12:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:41,358 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-25 03:12:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:12:41,360 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:12:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:41,379 INFO L225 Difference]: With dead ends: 324 [2020-09-25 03:12:41,380 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 03:12:41,386 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 03:12:41,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 03:12:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-25 03:12:41,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 03:12:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-25 03:12:41,468 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-25 03:12:41,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:41,468 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-25 03:12:41,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:12:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-25 03:12:41,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 03:12:41,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:41,475 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 03:12:41,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:12:41,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:41,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-25 03:12:41,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:41,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640674985] [2020-09-25 03:12:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 03:12:46,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:12:46,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4690 [2020-09-25 03:12:46,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:12:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:12:46,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:12:46,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:12:46,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:46,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:46,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:46,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:12:46,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:46,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:46,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:46,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:46,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:46,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 03:12:46,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:12:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 03:12:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:12:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:12:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:46,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:46,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:12:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:46,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:12:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:46,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:12:46,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:46,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:12:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:46,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:46,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:12:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 03:12:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:46,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:46,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:46,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:46,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:12:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:46,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:46,787 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 03:12:46,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640674985] [2020-09-25 03:12:46,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:12:46,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:12:46,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585590426] [2020-09-25 03:12:46,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:12:46,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:46,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:12:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:12:46,792 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states. [2020-09-25 03:12:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:48,137 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2020-09-25 03:12:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:12:48,138 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 03:12:48,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:48,142 INFO L225 Difference]: With dead ends: 302 [2020-09-25 03:12:48,142 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 03:12:48,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:12:48,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 03:12:48,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-09-25 03:12:48,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-25 03:12:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2020-09-25 03:12:48,166 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 80 [2020-09-25 03:12:48,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:48,167 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2020-09-25 03:12:48,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:12:48,167 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2020-09-25 03:12:48,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 03:12:48,173 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:48,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 03:12:48,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:12:48,173 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:48,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:48,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1483717926, now seen corresponding path program 1 times [2020-09-25 03:12:48,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:48,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358491047] [2020-09-25 03:12:48,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 03:12:53,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:12:53,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 03:12:53,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:12:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:12:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:12:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:53,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:53,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:12:53,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:53,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:12:53,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:12:53,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:53,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:12:53,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:53,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:12:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:12:53,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:12:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:12:53,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:12:53,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 03:12:53,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:53,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:12:53,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:12:53,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:53,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:12:53,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:53,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:53,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:12:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:53,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:12:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:53,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:53,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:12:53,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:12:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:12:53,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:53,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:12:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:53,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:53,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:53,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:53,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:12:53,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:53,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 03:12:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:53,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:12:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 03:12:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:53,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:12:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:54,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:12:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:54,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:54,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:54,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:12:54,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:54,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 03:12:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:54,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:54,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:54,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:54,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:54,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:12:54,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:54,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:54,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 03:12:54,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358491047] [2020-09-25 03:12:54,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:12:54,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 03:12:54,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443876114] [2020-09-25 03:12:54,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 03:12:54,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:54,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 03:12:54,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 03:12:54,085 INFO L87 Difference]: Start difference. First operand 182 states and 206 transitions. Second operand 14 states. [2020-09-25 03:12:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:55,910 INFO L93 Difference]: Finished difference Result 378 states and 437 transitions. [2020-09-25 03:12:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:12:55,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-09-25 03:12:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:55,921 INFO L225 Difference]: With dead ends: 378 [2020-09-25 03:12:55,926 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 03:12:55,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2020-09-25 03:12:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 03:12:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2020-09-25 03:12:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-25 03:12:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 212 transitions. [2020-09-25 03:12:55,955 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 212 transitions. Word has length 112 [2020-09-25 03:12:55,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:55,955 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 212 transitions. [2020-09-25 03:12:55,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 03:12:55,956 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 212 transitions. [2020-09-25 03:12:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 03:12:55,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:55,959 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] [2020-09-25 03:12:55,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:12:55,959 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:55,960 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-25 03:12:55,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:55,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035703694] [2020-09-25 03:12:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:12:56,010 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:12:56,010 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:12:56,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:12:56,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:12:56 BoogieIcfgContainer [2020-09-25 03:12:56,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:12:56,048 INFO L168 Benchmark]: Toolchain (without parser) took 18916.43 ms. Allocated memory was 145.8 MB in the beginning and 373.8 MB in the end (delta: 228.1 MB). Free memory was 101.5 MB in the beginning and 200.1 MB in the end (delta: -98.6 MB). Peak memory consumption was 129.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,049 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.32 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 178.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,050 INFO L168 Benchmark]: Boogie Preprocessor took 88.05 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,051 INFO L168 Benchmark]: RCFGBuilder took 722.03 ms. Allocated memory is still 202.4 MB. Free memory was 175.9 MB in the beginning and 135.2 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,052 INFO L168 Benchmark]: TraceAbstraction took 17519.61 ms. Allocated memory was 202.4 MB in the beginning and 373.8 MB in the end (delta: 171.4 MB). Free memory was 135.2 MB in the beginning and 200.1 MB in the end (delta: -64.9 MB). Peak memory consumption was 106.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:56,056 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 577.32 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 178.9 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.05 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 175.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 722.03 ms. Allocated memory is still 202.4 MB. Free memory was 175.9 MB in the beginning and 135.2 MB in the end (delta: 40.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17519.61 ms. Allocated memory was 202.4 MB in the beginning and 373.8 MB in the end (delta: 171.4 MB). Free memory was 135.2 MB in the beginning and 200.1 MB in the end (delta: -64.9 MB). Peak memory consumption was 106.5 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: [L96] 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; [L96] RET, EXPR nondet_tree() [L96] CALL task(nondet_tree()) [L74] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L74] RET, EXPR min(t) [L74] int a = min(t); [L75] int b; [L77] CALL, EXPR size(t) [L69] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR size(t->left) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->left) [L70] EXPR t->right [L70] CALL, EXPR size(t->right) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->right) [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L78] RET assume_abort_if_not(n != 0) [L79] EXPR, FCALL calloc(n, sizeof(int)) [L79] int *x = calloc(n, sizeof(int)); [L80] CALL tree_inorder(t, x, n) [L58] COND FALSE !(!t) [L61] EXPR t->left [L61] CALL, EXPR tree_inorder(t->left, a, i) [L58] COND TRUE !t [L59] return i; [L61] RET, EXPR tree_inorder(t->left, a, i) [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right [L63] CALL, EXPR tree_inorder(t->right, a, i) [L58] COND TRUE !t [L59] return i; [L63] RET, EXPR tree_inorder(t->right, a, i) [L63] i = tree_inorder(t->right, a, i) [L64] return i; [L80] RET tree_inorder(t, x, n) [L81] EXPR x[0] [L81] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.3s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 496 SDtfs, 1080 SDslu, 1519 SDs, 0 SdLazy, 2495 SolverSat, 466 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=3, 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, 3 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 408 NumberOfCodeBlocks, 408 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 134296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 37/45 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...