/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:56:03,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:56:03,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:56:03,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:56:03,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:56:03,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:56:03,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:56:03,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:56:03,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:56:03,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:56:03,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:56:03,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:56:03,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:56:03,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:56:03,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:56:03,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:56:03,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:56:03,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:56:03,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:56:03,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:56:03,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:56:03,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:56:03,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:56:03,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:56:03,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:56:03,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:56:03,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:56:03,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:56:03,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:56:03,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:56:03,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:56:03,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:56:03,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:56:03,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:56:03,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:56:03,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:56:03,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:56:03,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:56:03,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:56:03,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:56:03,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:56:03,751 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 00:56:03,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:56:03,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:56:03,788 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:56:03,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:56:03,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:56:03,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:56:03,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:56:03,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:56:03,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:56:03,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:56:03,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:56:03,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:56:03,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:56:03,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:56:03,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:56:03,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:56:03,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:56:03,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:56:03,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:56:03,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:56:03,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:56:03,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:56:03,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:56:03,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:56:03,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:56:03,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:56:03,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:56:03,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:56:03,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:56:03,794 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:56:04,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:56:04,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:56:04,295 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:56:04,298 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:56:04,298 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:56:04,300 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 00:56:04,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b06267f/ee725afbf6bb4d8e9b5b06d2276be9ff/FLAG46f826ecd [2020-09-25 00:56:04,944 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:56:04,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 00:56:04,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b06267f/ee725afbf6bb4d8e9b5b06d2276be9ff/FLAG46f826ecd [2020-09-25 00:56:05,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3b06267f/ee725afbf6bb4d8e9b5b06d2276be9ff [2020-09-25 00:56:05,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:56:05,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:56:05,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:56:05,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:56:05,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:56:05,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2362c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05, skipping insertion in model container [2020-09-25 00:56:05,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:56:05,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:56:05,554 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 00:56:05,556 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 00:56:05,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:56:05,592 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:56:05,702 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 00:56:05,704 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 00:56:05,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:56:05,741 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:56:05,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05 WrapperNode [2020-09-25 00:56:05,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:56:05,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:56:05,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:56:05,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:56:05,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (1/1) ... [2020-09-25 00:56:05,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:56:05,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:56:05,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:56:05,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:56:05,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (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 00:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 00:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:56:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 00:56:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 00:56:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 00:56:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 00:56:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 00:56:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 00:56:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:56:05,895 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 00:56:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:56:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:56:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:56:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:56:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:56:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 00:56:05,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 00:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 00:56:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 00:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 00:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 00:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:56:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:56:06,584 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:56:06,585 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 00:56:06,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:56:06 BoogieIcfgContainer [2020-09-25 00:56:06,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:56:06,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:56:06,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:56:06,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:56:06,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:56:05" (1/3) ... [2020-09-25 00:56:06,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ea53c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:56:06, skipping insertion in model container [2020-09-25 00:56:06,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:56:05" (2/3) ... [2020-09-25 00:56:06,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ea53c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:56:06, skipping insertion in model container [2020-09-25 00:56:06,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:56:06" (3/3) ... [2020-09-25 00:56:06,611 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-25 00:56:06,623 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:56:06,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:56:06,659 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:56:06,691 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:56:06,691 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:56:06,691 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:56:06,691 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:56:06,691 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:56:06,692 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:56:06,692 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:56:06,692 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:56:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-25 00:56:06,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 00:56:06,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:06,737 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 00:56:06,738 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:06,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:06,745 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-25 00:56:06,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:06,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295655211] [2020-09-25 00:56:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 00:56:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-09-25 00:56:07,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:56:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:56:07,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:56:07,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:56:07,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:07,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:56:07,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:07,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:56:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:07,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:07,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:07,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 00:56:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:07,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:07,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:56:07,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:07,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:56:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 00:56:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:07,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 00:56:07,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 00:56:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 00:56:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:07,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:56:07,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:07,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 00:56:07,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:07,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 00:56:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:07,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:07,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:07,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:56:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:07,990 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 00:56:07,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295655211] [2020-09-25 00:56:07,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:56:07,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 00:56:07,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332679673] [2020-09-25 00:56:08,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:56:08,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:08,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:56:08,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:56:08,030 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-25 00:56:09,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:09,282 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-25 00:56:09,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:56:09,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 00:56:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:09,304 INFO L225 Difference]: With dead ends: 333 [2020-09-25 00:56:09,304 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 00:56:09,311 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 00:56:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 00:56:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-25 00:56:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 00:56:09,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-25 00:56:09,396 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-25 00:56:09,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:09,396 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-25 00:56:09,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:56:09,397 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-25 00:56:09,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 00:56:09,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:09,402 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 00:56:09,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:56:09,403 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:09,404 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-25 00:56:09,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:09,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672279822] [2020-09-25 00:56:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:09,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:09,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 00:56:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:56:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4209 [2020-09-25 00:56:13,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:56:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 00:56:13,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:56:13,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:56:13,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:13,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:13,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:56:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:13,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:13,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:13,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:13,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 00:56:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:13,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:13,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:13,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:13,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:56:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:56:13,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 00:56:13,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 00:56:13,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:13,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:13,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:13,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:13,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:56:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:13,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:13,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:13,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 00:56:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:13,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:13,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:13,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:13,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:13,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:13,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:13,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 00:56:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:14,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:56:14,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:14,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 00:56:14,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:14,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 00:56:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:14,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:14,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:14,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:14,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:56:14,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:14,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:14,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:14,256 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 00:56:14,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672279822] [2020-09-25 00:56:14,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:14,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:56:14,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848030502] [2020-09-25 00:56:14,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:56:14,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:14,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:56:14,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:56:14,261 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-25 00:56:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:15,623 INFO L93 Difference]: Finished difference Result 307 states and 349 transitions. [2020-09-25 00:56:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:56:15,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 00:56:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:15,627 INFO L225 Difference]: With dead ends: 307 [2020-09-25 00:56:15,627 INFO L226 Difference]: Without dead ends: 198 [2020-09-25 00:56:15,631 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 00:56:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-25 00:56:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2020-09-25 00:56:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-25 00:56:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions. [2020-09-25 00:56:15,654 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 80 [2020-09-25 00:56:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:15,655 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions. [2020-09-25 00:56:15,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:56:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions. [2020-09-25 00:56:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 00:56:15,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:15,661 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 00:56:15,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:56:15,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:15,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:15,662 INFO L82 PathProgramCache]: Analyzing trace with hash -252425215, now seen corresponding path program 1 times [2020-09-25 00:56:15,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:15,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854227851] [2020-09-25 00:56:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:15,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:16,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:20,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 00:56:20,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:56:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:56:20,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:56:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 00:56:20,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 00:56:20,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:20,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:20,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:20,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:20,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:20,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:56:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:20,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:20,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:20,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:20,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 00:56:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:20,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:20,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:20,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:56:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:56:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:20,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 00:56:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:20,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:20,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:56:20,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:20,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 00:56:20,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:20,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:20,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:21,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:21,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:56:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:21,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:21,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:21,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 00:56:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:21,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:21,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 00:56:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:21,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:56:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 00:56:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:21,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 00:56:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 00:56:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 00:56:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:21,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 00:56:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:56:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:21,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:21,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:21,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:21,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:21,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:21,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:56:21,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 00:56:21,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854227851] [2020-09-25 00:56:21,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:21,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:56:21,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294181518] [2020-09-25 00:56:21,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:56:21,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:21,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:56:21,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:56:21,361 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand 13 states. [2020-09-25 00:56:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:22,682 INFO L93 Difference]: Finished difference Result 333 states and 379 transitions. [2020-09-25 00:56:22,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:56:22,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-09-25 00:56:22,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:22,687 INFO L225 Difference]: With dead ends: 333 [2020-09-25 00:56:22,687 INFO L226 Difference]: Without dead ends: 200 [2020-09-25 00:56:22,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:56:22,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-09-25 00:56:22,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 189. [2020-09-25 00:56:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-25 00:56:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 215 transitions. [2020-09-25 00:56:22,709 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 215 transitions. Word has length 112 [2020-09-25 00:56:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:22,710 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 215 transitions. [2020-09-25 00:56:22,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:56:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 215 transitions. [2020-09-25 00:56:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 00:56:22,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:22,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 00:56:22,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:56:22,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:22,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:22,717 INFO L82 PathProgramCache]: Analyzing trace with hash 525009593, now seen corresponding path program 1 times [2020-09-25 00:56:22,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:22,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572791348] [2020-09-25 00:56:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 00:56:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:56:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 00:56:27,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:56:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:56:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 00:56:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:56:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:27,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:27,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:27,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:56:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:27,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 00:56:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:27,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:27,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:27,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:27,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 00:56:27,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:56:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:27,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:56:27,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 00:56:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:27,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:56:28,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:56:28,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 00:56:28,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:28,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:56:28,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:56:28,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:56:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:28,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:56:28,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:28,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 00:56:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:28,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:56:28,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:28,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 00:56:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 00:56:28,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 00:56:28,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:56:28,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:56:28,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:56:28,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:56:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:28,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:56:28,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:28,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:56:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:56:28,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:56:28,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:56:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:56:28,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 00:56:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:56:28,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:56:28,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:56:28,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:28,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 00:56:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 00:56:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:28,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 00:56:28,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 00:56:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 00:56:28,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 00:56:28,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:28,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 00:56:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:56:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:28,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:56:28,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 00:56:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:56:28,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:56:28,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:56:28,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:56:28,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:56:28,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:56:28,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:56:28,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:56:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:56:28,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:56:28,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:56:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 00:56:28,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572791348] [2020-09-25 00:56:28,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:56:28,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:56:28,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042900358] [2020-09-25 00:56:28,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:56:28,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:56:28,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:56:28,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:56:28,466 INFO L87 Difference]: Start difference. First operand 189 states and 215 transitions. Second operand 14 states. [2020-09-25 00:56:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:56:29,988 INFO L93 Difference]: Finished difference Result 335 states and 381 transitions. [2020-09-25 00:56:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:56:29,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-09-25 00:56:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:56:29,993 INFO L225 Difference]: With dead ends: 335 [2020-09-25 00:56:29,993 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 00:56:29,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:56:29,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 00:56:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2020-09-25 00:56:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 00:56:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2020-09-25 00:56:30,013 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 138 [2020-09-25 00:56:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:56:30,013 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2020-09-25 00:56:30,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:56:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2020-09-25 00:56:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 00:56:30,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:56:30,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:56:30,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:56:30,017 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:56:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:56:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-25 00:56:30,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:56:30,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386084711] [2020-09-25 00:56:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:56:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:56:30,066 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:56:30,066 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:56:30,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:56:30,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:56:30 BoogieIcfgContainer [2020-09-25 00:56:30,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:56:30,103 INFO L168 Benchmark]: Toolchain (without parser) took 24834.20 ms. Allocated memory was 142.1 MB in the beginning and 396.4 MB in the end (delta: 254.3 MB). Free memory was 105.1 MB in the beginning and 178.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 180.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:56:30,104 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:56:30,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 468.90 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 179.6 MB in the end (delta: -75.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:56:30,106 INFO L168 Benchmark]: Boogie Preprocessor took 62.90 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 177.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:56:30,107 INFO L168 Benchmark]: RCFGBuilder took 787.92 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 135.5 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:56:30,108 INFO L168 Benchmark]: TraceAbstraction took 23503.44 ms. Allocated memory was 203.4 MB in the beginning and 396.4 MB in the end (delta: 192.9 MB). Free memory was 134.9 MB in the beginning and 178.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 149.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:56:30,112 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 142.1 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 468.90 ms. Allocated memory was 142.1 MB in the beginning and 203.4 MB in the end (delta: 61.3 MB). Free memory was 104.5 MB in the beginning and 179.6 MB in the end (delta: -75.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.90 ms. Allocated memory is still 203.4 MB. Free memory was 179.6 MB in the beginning and 177.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 787.92 ms. Allocated memory is still 203.4 MB. Free memory was 177.1 MB in the beginning and 135.5 MB in the end (delta: 41.6 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23503.44 ms. Allocated memory was 203.4 MB in the beginning and 396.4 MB in the end (delta: 192.9 MB). Free memory was 134.9 MB in the beginning and 178.6 MB in the end (delta: -43.7 MB). Peak memory consumption was 149.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 680 SDtfs, 1272 SDslu, 2037 SDs, 0 SdLazy, 3506 SolverSat, 471 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 206356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 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...