/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 12:18:41,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 12:18:41,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 12:18:41,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 12:18:41,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 12:18:41,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 12:18:41,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 12:18:41,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 12:18:41,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 12:18:41,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 12:18:41,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 12:18:41,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 12:18:41,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 12:18:41,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 12:18:41,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 12:18:41,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 12:18:41,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 12:18:41,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 12:18:41,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 12:18:41,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 12:18:41,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 12:18:41,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 12:18:41,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 12:18:41,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 12:18:41,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 12:18:41,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 12:18:41,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 12:18:41,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 12:18:41,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 12:18:41,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-20 12:18:41,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 12:18:41,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 12:18:41,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 12:18:41,731 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 12:18:41,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 12:18:41,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 12:18:41,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 12:18:41,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 12:18:41,750 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 12:18:41,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 12:18:41,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 12:18:41,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 12:18:41,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 12:18:41,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 12:18:41,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 12:18:41,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 12:18:41,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 12:18:41,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 12:18:41,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 12:18:41,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 12:18:41,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 12:18:41,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 12:18:41,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 12:18:41,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 12:18:41,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 12:18:41,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 12:18:41,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 12:18:41,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 12:18:41,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 12:18:41,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 12:18:41,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:41,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 12:18:41,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 12:18:41,757 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 12:18:42,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 12:18:42,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 12:18:42,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 12:18:42,096 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 12:18:42,096 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 12:18:42,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-07-20 12:18:42,174 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898bb85c6/6f78569af937444f8f68210e9ab7fc5c/FLAGc7989429d [2020-07-20 12:18:42,725 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 12:18:42,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-07-20 12:18:42,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898bb85c6/6f78569af937444f8f68210e9ab7fc5c/FLAGc7989429d [2020-07-20 12:18:43,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898bb85c6/6f78569af937444f8f68210e9ab7fc5c [2020-07-20 12:18:43,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 12:18:43,069 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 12:18:43,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 12:18:43,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 12:18:43,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 12:18:43,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b328d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43, skipping insertion in model container [2020-07-20 12:18:43,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 12:18:43,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 12:18:43,317 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 12:18:43,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:18:43,372 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 12:18:43,491 WARN L1484 CHandler]: Possible shadowing of function min [2020-07-20 12:18:43,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 12:18:43,524 INFO L208 MainTranslator]: Completed translation [2020-07-20 12:18:43,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43 WrapperNode [2020-07-20 12:18:43,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 12:18:43,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 12:18:43,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 12:18:43,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 12:18:43,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... [2020-07-20 12:18:43,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 12:18:43,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 12:18:43,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 12:18:43,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 12:18:43,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 12:18:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 12:18:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 12:18:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 12:18:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 12:18:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-07-20 12:18:43,664 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-07-20 12:18:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-07-20 12:18:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-07-20 12:18:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-07-20 12:18:43,665 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-07-20 12:18:43,666 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 12:18:43,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-07-20 12:18:43,667 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 12:18:43,668 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 12:18:43,668 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 12:18:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 12:18:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-07-20 12:18:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-07-20 12:18:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-07-20 12:18:43,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 12:18:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 12:18:43,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 12:18:44,206 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 12:18:44,206 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 12:18:44,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:44 BoogieIcfgContainer [2020-07-20 12:18:44,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 12:18:44,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 12:18:44,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 12:18:44,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 12:18:44,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:18:43" (1/3) ... [2020-07-20 12:18:44,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce81c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:44, skipping insertion in model container [2020-07-20 12:18:44,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:18:43" (2/3) ... [2020-07-20 12:18:44,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce81c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:18:44, skipping insertion in model container [2020-07-20 12:18:44,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:18:44" (3/3) ... [2020-07-20 12:18:44,222 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-07-20 12:18:44,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 12:18:44,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 12:18:44,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 12:18:44,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 12:18:44,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 12:18:44,288 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 12:18:44,288 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 12:18:44,288 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 12:18:44,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 12:18:44,289 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 12:18:44,289 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 12:18:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-07-20 12:18:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 12:18:44,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:44,326 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] [2020-07-20 12:18:44,327 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:44,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1213743031, now seen corresponding path program 1 times [2020-07-20 12:18:44,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:44,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579386714] [2020-07-20 12:18:44,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:44,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 12:18:44,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:18:44,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:18:44,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579386714] [2020-07-20 12:18:44,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:18:44,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 12:18:44,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652846629] [2020-07-20 12:18:44,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 12:18:44,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:44,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 12:18:44,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:18:44,562 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 2 states. [2020-07-20 12:18:44,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:44,605 INFO L93 Difference]: Finished difference Result 161 states and 207 transitions. [2020-07-20 12:18:44,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 12:18:44,607 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 44 [2020-07-20 12:18:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:44,621 INFO L225 Difference]: With dead ends: 161 [2020-07-20 12:18:44,621 INFO L226 Difference]: Without dead ends: 88 [2020-07-20 12:18:44,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 12:18:44,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-20 12:18:44,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-07-20 12:18:44,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-20 12:18:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-07-20 12:18:44,687 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 44 [2020-07-20 12:18:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-07-20 12:18:44,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 12:18:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-07-20 12:18:44,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 12:18:44,694 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:44,694 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] [2020-07-20 12:18:44,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:44,906 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:44,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:44,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1392280523, now seen corresponding path program 1 times [2020-07-20 12:18:44,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:44,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886799197] [2020-07-20 12:18:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:45,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 12:18:45,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 12:18:45,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:18:45,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886799197] [2020-07-20 12:18:45,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:18:45,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-20 12:18:45,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732705630] [2020-07-20 12:18:45,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 12:18:45,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:45,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 12:18:45,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-20 12:18:45,127 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 7 states. [2020-07-20 12:18:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:45,206 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2020-07-20 12:18:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 12:18:45,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 44 [2020-07-20 12:18:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:45,211 INFO L225 Difference]: With dead ends: 147 [2020-07-20 12:18:45,212 INFO L226 Difference]: Without dead ends: 90 [2020-07-20 12:18:45,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 12:18:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-20 12:18:45,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-07-20 12:18:45,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-07-20 12:18:45,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2020-07-20 12:18:45,230 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 44 [2020-07-20 12:18:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:45,231 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2020-07-20 12:18:45,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 12:18:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2020-07-20 12:18:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 12:18:45,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:45,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-07-20 12:18:45,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:45,448 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1672920772, now seen corresponding path program 1 times [2020-07-20 12:18:45,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:45,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481560102] [2020-07-20 12:18:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:45,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-20 12:18:45,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:45,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 12:18:45,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:18:45,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 12:18:45,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481560102] [2020-07-20 12:18:45,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:18:45,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-07-20 12:18:45,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761763413] [2020-07-20 12:18:45,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 12:18:45,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:45,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 12:18:45,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-20 12:18:45,833 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand 9 states. [2020-07-20 12:18:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:46,016 INFO L93 Difference]: Finished difference Result 160 states and 202 transitions. [2020-07-20 12:18:46,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 12:18:46,019 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-07-20 12:18:46,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:46,025 INFO L225 Difference]: With dead ends: 160 [2020-07-20 12:18:46,025 INFO L226 Difference]: Without dead ends: 92 [2020-07-20 12:18:46,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-07-20 12:18:46,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-20 12:18:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-07-20 12:18:46,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 12:18:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 116 transitions. [2020-07-20 12:18:46,060 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 116 transitions. Word has length 56 [2020-07-20 12:18:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:46,060 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 116 transitions. [2020-07-20 12:18:46,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 12:18:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 116 transitions. [2020-07-20 12:18:46,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-20 12:18:46,070 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:46,070 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-20 12:18:46,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:46,271 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:46,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1614566559, now seen corresponding path program 1 times [2020-07-20 12:18:46,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098073503] [2020-07-20 12:18:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:46,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-20 12:18:46,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-07-20 12:18:46,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 12:18:46,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098073503] [2020-07-20 12:18:46,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 12:18:46,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 12:18:46,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620102192] [2020-07-20 12:18:46,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 12:18:46,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:46,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 12:18:46,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-07-20 12:18:46,466 INFO L87 Difference]: Start difference. First operand 92 states and 116 transitions. Second operand 9 states. [2020-07-20 12:18:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:46,618 INFO L93 Difference]: Finished difference Result 159 states and 201 transitions. [2020-07-20 12:18:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 12:18:46,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-07-20 12:18:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:46,620 INFO L225 Difference]: With dead ends: 159 [2020-07-20 12:18:46,621 INFO L226 Difference]: Without dead ends: 94 [2020-07-20 12:18:46,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-07-20 12:18:46,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-20 12:18:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-07-20 12:18:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-20 12:18:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-07-20 12:18:46,635 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 66 [2020-07-20 12:18:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:46,635 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-07-20 12:18:46,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 12:18:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-07-20 12:18:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-07-20 12:18:46,638 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:46,638 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-07-20 12:18:46,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:46,852 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1598247989, now seen corresponding path program 1 times [2020-07-20 12:18:46,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:46,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [131449140] [2020-07-20 12:18:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:18:46,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 31 conjunts are in the unsatisfiable core [2020-07-20 12:18:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:18:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 12:18:47,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:18:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-07-20 12:18:47,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [131449140] [2020-07-20 12:18:47,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 12:18:47,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2020-07-20 12:18:47,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491651980] [2020-07-20 12:18:47,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-20 12:18:47,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 12:18:47,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-20 12:18:47,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-07-20 12:18:47,311 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 15 states. [2020-07-20 12:18:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:18:47,678 INFO L93 Difference]: Finished difference Result 149 states and 190 transitions. [2020-07-20 12:18:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 12:18:47,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-07-20 12:18:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:18:47,682 INFO L225 Difference]: With dead ends: 149 [2020-07-20 12:18:47,682 INFO L226 Difference]: Without dead ends: 96 [2020-07-20 12:18:47,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-07-20 12:18:47,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-07-20 12:18:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-07-20 12:18:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-07-20 12:18:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 123 transitions. [2020-07-20 12:18:47,696 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 123 transitions. Word has length 79 [2020-07-20 12:18:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:18:47,697 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 123 transitions. [2020-07-20 12:18:47,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-20 12:18:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 123 transitions. [2020-07-20 12:18:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-20 12:18:47,698 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:18:47,699 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-20 12:18:47,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:47,912 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:18:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:18:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1471493578, now seen corresponding path program 1 times [2020-07-20 12:18:47,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:18:47,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901587355] [2020-07-20 12:18:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 12:18:48,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 12:18:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 12:18:48,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 12:18:48,220 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 12:18:48,221 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 12:18:48,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:18:48,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 12:18:48 BoogieIcfgContainer [2020-07-20 12:18:48,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 12:18:48,499 INFO L168 Benchmark]: Toolchain (without parser) took 5430.16 ms. Allocated memory was 137.4 MB in the beginning and 250.1 MB in the end (delta: 112.7 MB). Free memory was 100.0 MB in the beginning and 138.8 MB in the end (delta: -38.8 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,500 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.61 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 177.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,501 INFO L168 Benchmark]: Boogie Preprocessor took 61.10 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,502 INFO L168 Benchmark]: RCFGBuilder took 625.09 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 140.0 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,503 INFO L168 Benchmark]: TraceAbstraction took 4282.31 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 140.0 MB in the beginning and 138.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-07-20 12:18:48,507 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 137.4 MB. Free memory was 119.2 MB in the beginning and 118.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 454.61 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 177.5 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.10 ms. Allocated memory is still 201.3 MB. Free memory was 177.5 MB in the beginning and 174.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 625.09 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 140.0 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4282.31 ms. Allocated memory was 201.3 MB in the beginning and 250.1 MB in the end (delta: 48.8 MB). Free memory was 140.0 MB in the beginning and 138.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 49.9 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: [L103] 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; VAL [\result={0:0}] [L28] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; VAL [\result={0:0}] [L29] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={-2:0}, n={-2:0}, nondet_tree()={0:0}] [L29] n->right = nondet_tree() [L30] return n; VAL [\result={-2:0}, malloc(sizeof(struct node))={-2:0}, n={-2:0}] [L103] RET, EXPR nondet_tree() VAL [nondet_tree()={-2:0}] [L103] CALL task(nondet_tree()) VAL [t={-2:0}] [L81] CALL, EXPR min(t) VAL [n={-2:0}] [L35] COND FALSE !(!n) [L38] EXPR n->left VAL [n={-2:0}, n={-2:0}, n->left={0:0}] [L38] CALL, EXPR min(n->left) VAL [n={0:0}] [L35] COND TRUE !n [L36] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L38] RET, EXPR min(n->left) VAL [min(n->left)=2147483647, n={-2:0}, n={-2:0}, n->left={0:0}] [L38] int a = min(n->left); [L39] EXPR n->right VAL [a=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L39] CALL, EXPR min(n->right) VAL [n={0:0}] [L35] COND TRUE !n [L36] return 2147483647; VAL [\result=2147483647, n={0:0}, n={0:0}] [L39] RET, EXPR min(n->right) VAL [a=2147483647, min(n->right)=2147483647, n={-2:0}, n={-2:0}, n->right={0:0}] [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; VAL [\result=2147483647, a=2147483647, b=2147483647, n={-2:0}, n={-2:0}] [L81] RET, EXPR min(t) VAL [min(t)=2147483647, t={-2:0}, t={-2:0}] [L81] int a = min(t); [L82] int b; VAL [a=2147483647, b={2:0}, t={-2:0}, t={-2:0}] [L84] CALL, EXPR size(t) VAL [t={-2:0}] [L76] COND FALSE !(!t) [L77] EXPR t->left VAL [t={-2:0}, t={-2:0}, t->left={0:0}] [L77] CALL, EXPR size(t->left) VAL [t={0:0}] [L76] COND TRUE !t [L76] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L77] RET, EXPR size(t->left) VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}] [L77] EXPR t->right VAL [size(t->left)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L77] CALL, EXPR size(t->right) VAL [t={0:0}] [L76] COND TRUE !t [L76] return 0; VAL [\result=0, t={0:0}, t={0:0}] [L77] RET, EXPR size(t->right) VAL [size(t->left)=0, size(t->right)=0, t={-2:0}, t={-2:0}, t->left={0:0}, t->right={0:0}] [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) VAL [a=2147483647, b={2:0}, size(t)=1, t={-2:0}, t={-2:0}] [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) VAL [\old(cond)=1] [L10] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L85] RET assume_abort_if_not(n != 0) VAL [a=2147483647, b={2:0}, n=1, t={-2:0}, t={-2:0}] [L86] EXPR, FCALL calloc(n, sizeof(int)) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}] [L86] int *x = calloc(n, sizeof(int)); VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, x={-1:0}] [L87] CALL tree_inorder(t, x, n) VAL [\old(i)=1, a={-1:0}, t={-2:0}] [L65] COND FALSE !(!t) [L68] EXPR t->left VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}] [L68] CALL, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, t={0:0}] [L65] COND TRUE !t [L66] return i; VAL [\old(i)=1, \result=1, a={-1:0}, a={-1:0}, i=1, t={0:0}, t={0:0}] [L68] RET, EXPR tree_inorder(t->left, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=1, t={-2:0}, t={-2:0}, t->left={0:0}, tree_inorder(t->left, a, i)=1] [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}] [L70] CALL, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=2, a={-1:0}, t={0:0}] [L65] COND TRUE !t [L66] return i; VAL [\old(i)=2, \result=2, a={-1:0}, a={-1:0}, i=2, t={0:0}, t={0:0}] [L70] RET, EXPR tree_inorder(t->right, a, i) VAL [\old(i)=1, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}, t->right={0:0}, tree_inorder(t->right, a, i)=2] [L70] i = tree_inorder(t->right, a, i) [L71] return i; VAL [\old(i)=1, \result=2, a={-1:0}, a={-1:0}, i=2, t={-2:0}, t={-2:0}] [L87] RET tree_inorder(t, x, n) VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, tree_inorder(t, x, n)=2, x={-1:0}] [L88] EXPR x[0] VAL [a=2147483647, b={2:0}, calloc(n, sizeof(int))={-1:0}, n=1, t={-2:0}, t={-2:0}, x={-1:0}, x[0]=0] [L88] CALL __VERIFIER_assert(a == x[0]) VAL [\old(cond)=0] [L14] COND TRUE !cond VAL [\old(cond)=0, cond=0] [L14] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 526 SDtfs, 104 SDslu, 2638 SDs, 0 SdLazy, 417 SolverSat, 62 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 434 GetRequests, 389 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 58905 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1370 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 103/111 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...