/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:12:31,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:12:31,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:12:31,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:12:31,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:12:31,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:12:31,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:12:31,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:12:31,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:12:31,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:12:31,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:12:31,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:12:31,471 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:12:31,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:12:31,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:12:31,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:12:31,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:12:31,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:12:31,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:12:31,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:12:31,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:12:31,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:12:31,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:12:31,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:12:31,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:12:31,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:12:31,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:12:31,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:12:31,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:12:31,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:12:31,512 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:12:31,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:12:31,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:12:31,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:12:31,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:12:31,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:12:31,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:12:31,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:12:31,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:12:31,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:12:31,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:12:31,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:12:31,581 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:12:31,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:12:31,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:12:31,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:12:31,585 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:12:31,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:12:31,585 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:12:31,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:12:31,586 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:12:31,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:12:31,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:12:31,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:12:31,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:12:31,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:12:31,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:12:31,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:12:31,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:12:31,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:12:31,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:12:31,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:12:31,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:12:31,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:12:31,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:12:31,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:12:31,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:12:31,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:12:31,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:12:31,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:12:31,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:12:31,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:12:32,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:12:32,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:12:32,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:12:32,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:12:32,090 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:12:32,092 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 03:12:32,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fa17907/0d5cc4e3ef6141f58aa002d6df490567/FLAG25f876aff [2020-09-25 03:12:32,758 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:12:32,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 03:12:32,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fa17907/0d5cc4e3ef6141f58aa002d6df490567/FLAG25f876aff [2020-09-25 03:12:33,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/79fa17907/0d5cc4e3ef6141f58aa002d6df490567 [2020-09-25 03:12:33,088 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:12:33,094 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:12:33,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:12:33,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:12:33,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:12:33,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33, skipping insertion in model container [2020-09-25 03:12:33,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:12:33,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:12:33,380 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:33,383 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:33,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:12:33,439 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:12:33,554 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:33,559 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 03:12:33,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:12:33,609 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:12:33,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33 WrapperNode [2020-09-25 03:12:33,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:12:33,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:12:33,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:12:33,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:12:33,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... [2020-09-25 03:12:33,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:12:33,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:12:33,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:12:33,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:12:33,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:12:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:12:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:12:33,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 03:12:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:12:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 03:12:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 03:12:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 03:12:33,750 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 03:12:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 03:12:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 03:12:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:12:33,751 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 03:12:33,751 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:12:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:12:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:12:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:12:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 03:12:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 03:12:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:12:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:12:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 03:12:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:12:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 03:12:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 03:12:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:12:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:12:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:12:34,373 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:12:34,374 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 03:12:34,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:12:34 BoogieIcfgContainer [2020-09-25 03:12:34,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:12:34,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:12:34,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:12:34,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:12:34,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:12:33" (1/3) ... [2020-09-25 03:12:34,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:12:34, skipping insertion in model container [2020-09-25 03:12:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:12:33" (2/3) ... [2020-09-25 03:12:34,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:12:34, skipping insertion in model container [2020-09-25 03:12:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:12:34" (3/3) ... [2020-09-25 03:12:34,392 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-25 03:12:34,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:12:34,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:12:34,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:12:34,475 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:12:34,475 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:12:34,475 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:12:34,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:12:34,476 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:12:34,476 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:12:34,476 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:12:34,476 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:12:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-25 03:12:34,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 03:12:34,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:34,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:12:34,521 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:34,528 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-25 03:12:34,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:34,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-25 03:12:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 03:12:35,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-09-25 03:12:35,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:12:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 03:12:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:12:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:12:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:35,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:12:35,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:35,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:35,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:35,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:35,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:35,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:35,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:35,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:35,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:12:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:35,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:35,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 03:12:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:35,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:12:35,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:35,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:35,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:35,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 03:12:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:35,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:35,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:35,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 03:12:35,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:35,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:35,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 03:12:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:35,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:35,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:35,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:35,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:35,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:35,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 03:12:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:12:35,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-25 03:12:35,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:12:35,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:12:35,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030280000] [2020-09-25 03:12:35,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:12:35,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:12:35,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:12:35,769 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-25 03:12:37,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:37,070 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-25 03:12:37,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:12:37,073 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 03:12:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:37,095 INFO L225 Difference]: With dead ends: 333 [2020-09-25 03:12:37,095 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 03:12:37,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:12:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 03:12:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-25 03:12:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 03:12:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-25 03:12:37,184 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-25 03:12:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:37,184 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-25 03:12:37,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:12:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-25 03:12:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 03:12:37,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:37,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:12:37,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:12:37,191 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:37,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-25 03:12:37,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:37,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946087875] [2020-09-25 03:12:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:37,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:37,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 03:12:41,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:12:41,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4240 [2020-09-25 03:12:41,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:12:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 03:12:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 03:12:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:12:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:41,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:41,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:41,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:41,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:41,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:41,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:12:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:41,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:41,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:41,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:41,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:41,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:12:41,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 03:12:41,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 03:12:41,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:41,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:12:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:41,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:41,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:41,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:12:41,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:41,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:12:41,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:41,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:12:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:41,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:12:41,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:41,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:12:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:12:41,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:12:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:41,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 03:12:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:12:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:42,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:12:42,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946087875] [2020-09-25 03:12:42,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:12:42,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:12:42,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328187050] [2020-09-25 03:12:42,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:12:42,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:42,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:12:42,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:12:42,063 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-25 03:12:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:43,447 INFO L93 Difference]: Finished difference Result 307 states and 349 transitions. [2020-09-25 03:12:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:12:43,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 03:12:43,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:43,454 INFO L225 Difference]: With dead ends: 307 [2020-09-25 03:12:43,458 INFO L226 Difference]: Without dead ends: 198 [2020-09-25 03:12:43,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:12:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-25 03:12:43,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 187. [2020-09-25 03:12:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-09-25 03:12:43,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions. [2020-09-25 03:12:43,499 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 80 [2020-09-25 03:12:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:43,500 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions. [2020-09-25 03:12:43,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:12:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions. [2020-09-25 03:12:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 03:12:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:43,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:12:43,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:12:43,516 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash -252425215, now seen corresponding path program 1 times [2020-09-25 03:12:43,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:43,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042500987] [2020-09-25 03:12:43,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:43,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:43,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:44,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 03:12:48,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:12:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 03:12:48,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:12:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:12:48,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 03:12:48,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:48,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:12:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:48,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:48,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:48,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:12:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:48,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:12:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:12:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:48,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:12:48,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:12:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:48,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:48,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:48,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 03:12:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:48,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:12:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:12:48,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:48,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:12:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:48,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:12:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:12:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:12:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 03:12:48,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 03:12:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:12:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:48,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:48,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:48,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:48,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:48,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:49,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 40 [2020-09-25 03:12:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:12:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:12:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:12:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:12:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:49,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 03:12:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:12:49,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:12:49,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:12:49,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 03:12:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 03:12:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:12:49,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 03:12:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:49,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 03:12:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:12:49,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 03:12:49,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:12:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:12:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:12:49,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:12:49,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:12:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:49,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:49,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 03:12:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:12:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:12:49,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:12:49,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:12:49,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:12:49,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:12:49,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:12:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:12:49,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:12:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:12:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:12:49,343 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 03:12:49,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042500987] [2020-09-25 03:12:49,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:12:49,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 03:12:49,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262721349] [2020-09-25 03:12:49,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 03:12:49,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:12:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 03:12:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:12:49,346 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand 16 states. [2020-09-25 03:12:51,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:12:51,559 INFO L93 Difference]: Finished difference Result 372 states and 427 transitions. [2020-09-25 03:12:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 03:12:51,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 112 [2020-09-25 03:12:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:12:51,563 INFO L225 Difference]: With dead ends: 372 [2020-09-25 03:12:51,563 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 03:12:51,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-09-25 03:12:51,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 03:12:51,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 191. [2020-09-25 03:12:51,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 03:12:51,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2020-09-25 03:12:51,587 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 112 [2020-09-25 03:12:51,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:12:51,587 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2020-09-25 03:12:51,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 03:12:51,587 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2020-09-25 03:12:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 03:12:51,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:12:51,591 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 03:12:51,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:12:51,591 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:12:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:12:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-25 03:12:51,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:12:51,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567789612] [2020-09-25 03:12:51,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:12:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:12:51,648 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:12:51,648 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:12:51,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:12:51,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:12:51 BoogieIcfgContainer [2020-09-25 03:12:51,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:12:51,697 INFO L168 Benchmark]: Toolchain (without parser) took 18605.37 ms. Allocated memory was 147.8 MB in the beginning and 354.4 MB in the end (delta: 206.6 MB). Free memory was 103.6 MB in the beginning and 195.4 MB in the end (delta: -91.8 MB). Peak memory consumption was 114.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:51,698 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:12:51,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 515.89 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 180.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:51,702 INFO L168 Benchmark]: Boogie Preprocessor took 61.48 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:51,707 INFO L168 Benchmark]: RCFGBuilder took 708.74 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 136.5 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:51,708 INFO L168 Benchmark]: TraceAbstraction took 17309.71 ms. Allocated memory was 204.5 MB in the beginning and 354.4 MB in the end (delta: 149.9 MB). Free memory was 136.5 MB in the beginning and 195.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 91.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:12:51,719 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 515.89 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 180.5 MB in the end (delta: -77.6 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 61.48 ms. Allocated memory is still 204.5 MB. Free memory was 180.5 MB in the beginning and 178.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 708.74 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 136.5 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17309.71 ms. Allocated memory was 204.5 MB in the beginning and 354.4 MB in the end (delta: 149.9 MB). Free memory was 136.5 MB in the beginning and 195.4 MB in the end (delta: -59.0 MB). Peak memory consumption was 91.0 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: 17.1s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 510 SDtfs, 955 SDslu, 1667 SDs, 0 SdLazy, 2917 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.5s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 138892 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 35/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...