/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 21:15:24,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 21:15:24,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 21:15:24,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 21:15:24,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 21:15:24,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 21:15:24,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 21:15:24,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 21:15:24,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 21:15:24,439 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 21:15:24,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 21:15:24,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 21:15:24,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 21:15:24,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 21:15:24,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 21:15:24,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 21:15:24,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 21:15:24,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 21:15:24,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 21:15:24,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 21:15:24,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 21:15:24,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 21:15:24,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 21:15:24,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 21:15:24,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 21:15:24,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 21:15:24,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 21:15:24,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 21:15:24,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 21:15:24,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 21:15:24,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 21:15:24,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 21:15:24,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 21:15:24,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 21:15:24,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 21:15:24,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 21:15:24,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 21:15:24,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 21:15:24,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 21:15:24,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 21:15:24,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 21:15:24,464 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 [2020-10-12 21:15:24,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 21:15:24,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 21:15:24,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 21:15:24,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 21:15:24,488 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 21:15:24,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 21:15:24,489 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 21:15:24,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 21:15:24,489 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 21:15:24,489 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 21:15:24,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 21:15:24,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 21:15:24,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 21:15:24,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 21:15:24,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 21:15:24,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 21:15:24,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 21:15:24,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 21:15:24,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 21:15:24,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 21:15:24,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 21:15:24,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 21:15:24,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 21:15:24,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 21:15:24,493 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 21:15:24,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 21:15:24,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 21:15:24,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 21:15:24,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 21:15:24,833 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 21:15:24,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-10-12 21:15:24,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2337e467e/e1bf2d3e69964b939edd983e186d8acd/FLAG635c8f38d [2020-10-12 21:15:25,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 21:15:25,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-10-12 21:15:25,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2337e467e/e1bf2d3e69964b939edd983e186d8acd/FLAG635c8f38d [2020-10-12 21:15:25,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2337e467e/e1bf2d3e69964b939edd983e186d8acd [2020-10-12 21:15:25,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 21:15:25,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 21:15:25,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:25,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 21:15:25,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 21:15:25,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:25" (1/1) ... [2020-10-12 21:15:25,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4572a173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:25, skipping insertion in model container [2020-10-12 21:15:25,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:15:25" (1/1) ... [2020-10-12 21:15:25,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 21:15:25,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 21:15:25,965 WARN L1484 CHandler]: Possible shadowing of function min [2020-10-12 21:15:25,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:25,996 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 21:15:26,151 WARN L1484 CHandler]: Possible shadowing of function min [2020-10-12 21:15:26,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 21:15:26,192 INFO L208 MainTranslator]: Completed translation [2020-10-12 21:15:26,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26 WrapperNode [2020-10-12 21:15:26,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 21:15:26,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 21:15:26,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 21:15:26,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 21:15:26,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (1/1) ... [2020-10-12 21:15:26,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 21:15:26,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 21:15:26,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 21:15:26,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 21:15:26,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (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 [2020-10-12 21:15:26,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 21:15:26,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-12 21:15:26,332 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-12 21:15:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-12 21:15:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-12 21:15:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 21:15:26,333 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-12 21:15:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 21:15:26,333 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 21:15:26,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 21:15:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-12 21:15:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 21:15:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 21:15:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 21:15:26,335 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-12 21:15:26,336 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-12 21:15:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 21:15:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-12 21:15:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 21:15:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 21:15:26,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 21:15:26,900 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 21:15:26,900 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 21:15:26,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:26 BoogieIcfgContainer [2020-10-12 21:15:26,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 21:15:26,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 21:15:26,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 21:15:26,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 21:15:26,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:15:25" (1/3) ... [2020-10-12 21:15:26,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5af4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:26, skipping insertion in model container [2020-10-12 21:15:26,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:15:26" (2/3) ... [2020-10-12 21:15:26,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5af4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:15:26, skipping insertion in model container [2020-10-12 21:15:26,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:15:26" (3/3) ... [2020-10-12 21:15:26,915 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-10-12 21:15:26,926 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 21:15:26,934 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 21:15:26,948 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 21:15:26,971 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 21:15:26,971 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 21:15:26,972 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 21:15:26,972 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 21:15:26,972 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 21:15:26,972 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 21:15:26,973 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 21:15:26,973 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 21:15:26,995 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-10-12 21:15:27,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 21:15:27,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:27,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:27,007 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:27,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:27,014 INFO L82 PathProgramCache]: Analyzing trace with hash 806421993, now seen corresponding path program 1 times [2020-10-12 21:15:27,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:27,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908557776] [2020-10-12 21:15:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 21:15:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-12 21:15:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 21:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-12 21:15:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 21:15:27,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 21:15:27,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 21:15:27,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:27,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:15:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:27,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:27,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:27,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:27,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-10-12 21:15:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:27,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:15:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:27,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:27,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:27,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 21:15:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:27,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:27,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:27,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:27,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:27,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 21:15:27,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:27,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 21:15:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 21:15:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:28,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:15:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 21:15:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:28,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:28,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:28,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:28,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:15:28,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 21:15:28,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908557776] [2020-10-12 21:15:28,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:28,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 21:15:28,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134108244] [2020-10-12 21:15:28,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 21:15:28,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:28,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 21:15:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-12 21:15:28,101 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 11 states. [2020-10-12 21:15:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:28,859 INFO L93 Difference]: Finished difference Result 174 states and 235 transitions. [2020-10-12 21:15:28,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 21:15:28,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-12 21:15:28,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:28,874 INFO L225 Difference]: With dead ends: 174 [2020-10-12 21:15:28,875 INFO L226 Difference]: Without dead ends: 98 [2020-10-12 21:15:28,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-12 21:15:28,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-12 21:15:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-10-12 21:15:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 21:15:28,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2020-10-12 21:15:28,941 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 44 [2020-10-12 21:15:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:28,942 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2020-10-12 21:15:28,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 21:15:28,942 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2020-10-12 21:15:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 21:15:28,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:28,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:28,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 21:15:28,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1561052270, now seen corresponding path program 1 times [2020-10-12 21:15:28,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:28,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604217936] [2020-10-12 21:15:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:29,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:31,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 21:15:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:15:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2798 [2020-10-12 21:15:31,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 21:15:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 21:15:31,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 21:15:31,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:31,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:31,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:31,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:31,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:31,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:31,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:31,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:31,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:31,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:15:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:31,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:31,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:31,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 21:15:31,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 21:15:31,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 21:15:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:31,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-12 21:15:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:31,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:31,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 21:15:31,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 21:15:31,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:31,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:31,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 21:15:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:31,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 21:15:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:31,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:31,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 21:15:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 21:15:31,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 21:15:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:32,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:32,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:32,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:32,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:15:32,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:32,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:32,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:32,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:32,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 21:15:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:32,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:32,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:32,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 21:15:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:32,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:32,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:32,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:15:32,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:32,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 21:15:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:32,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:32,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:32,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:32,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:32,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:32,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 21:15:32,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:32,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:32,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 21:15:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:32,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:32,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:32,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:32,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-12 21:15:32,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 21:15:32,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604217936] [2020-10-12 21:15:32,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 21:15:32,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 21:15:32,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24304855] [2020-10-12 21:15:32,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 21:15:32,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:32,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 21:15:32,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-12 21:15:32,123 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand 14 states. [2020-10-12 21:15:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:33,349 INFO L93 Difference]: Finished difference Result 183 states and 239 transitions. [2020-10-12 21:15:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 21:15:33,350 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-12 21:15:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:33,353 INFO L225 Difference]: With dead ends: 183 [2020-10-12 21:15:33,353 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 21:15:33,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-10-12 21:15:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 21:15:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2020-10-12 21:15:33,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 21:15:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2020-10-12 21:15:33,374 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 56 [2020-10-12 21:15:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:33,374 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2020-10-12 21:15:33,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 21:15:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2020-10-12 21:15:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 21:15:33,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:33,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:33,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 21:15:33,378 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:33,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:33,379 INFO L82 PathProgramCache]: Analyzing trace with hash -62868055, now seen corresponding path program 1 times [2020-10-12 21:15:33,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:33,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974449809] [2020-10-12 21:15:33,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:33,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:33,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:37,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:37,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-12 21:15:37,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 21:15:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4488 [2020-10-12 21:15:37,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 21:15:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 21:15:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 21:15:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:37,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 21:15:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:37,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:37,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:37,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:37,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:37,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-12 21:15:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 21:15:38,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 21:15:38,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:38,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 21:15:38,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 21:15:38,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 21:15:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 21:15:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:38,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 21:15:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:38,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:38,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 21:15:38,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-12 21:15:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 21:15:38,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 21:15:38,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 21:15:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:38,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:38,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:15:38,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:38,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:38,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 21:15:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 21:15:38,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 21:15:38,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 21:15:38,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 21:15:38,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 21:15:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 21:15:38,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 21:15:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 21:15:38,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 21:15:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 21:15:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 21:15:38,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 21:15:38,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 21:15:38,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 21:15:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 21:15:38,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 21:15:38,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-12 21:15:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 21:15:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 21:15:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 21:15:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 21:15:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 21:15:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 21:15:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 21:15:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 21:15:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 21:15:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 21:15:38,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 21:15:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-12 21:15:38,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974449809] [2020-10-12 21:15:38,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 21:15:38,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 21:15:38,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12587738] [2020-10-12 21:15:38,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 21:15:38,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 21:15:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 21:15:38,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 21:15:38,271 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand 13 states. [2020-10-12 21:15:39,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 21:15:39,075 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2020-10-12 21:15:39,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 21:15:39,076 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-10-12 21:15:39,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 21:15:39,081 INFO L225 Difference]: With dead ends: 152 [2020-10-12 21:15:39,081 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 21:15:39,083 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-12 21:15:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 21:15:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2020-10-12 21:15:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-12 21:15:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2020-10-12 21:15:39,115 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 79 [2020-10-12 21:15:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 21:15:39,116 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2020-10-12 21:15:39,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 21:15:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2020-10-12 21:15:39,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-12 21:15:39,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 21:15:39,124 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 21:15:39,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 21:15:39,125 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 21:15:39,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 21:15:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash -708508396, now seen corresponding path program 1 times [2020-10-12 21:15:39,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 21:15:39,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194947089] [2020-10-12 21:15:39,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 21:15:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 21:15:39,164 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 21:15:39,164 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 21:15:39,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 21:15:39,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 09:15:39 BoogieIcfgContainer [2020-10-12 21:15:39,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 21:15:39,204 INFO L168 Benchmark]: Toolchain (without parser) took 13466.26 ms. Allocated memory was 136.8 MB in the beginning and 385.4 MB in the end (delta: 248.5 MB). Free memory was 99.5 MB in the beginning and 257.5 MB in the end (delta: -158.0 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,206 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.58 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 99.3 MB in the beginning and 177.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,210 INFO L168 Benchmark]: Boogie Preprocessor took 60.82 ms. Allocated memory is still 202.4 MB. Free memory was 177.9 MB in the beginning and 175.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,215 INFO L168 Benchmark]: RCFGBuilder took 651.06 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 139.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,216 INFO L168 Benchmark]: TraceAbstraction took 12293.57 ms. Allocated memory was 202.4 MB in the beginning and 385.4 MB in the end (delta: 183.0 MB). Free memory was 139.2 MB in the beginning and 257.5 MB in the end (delta: -118.3 MB). Peak memory consumption was 64.7 MB. Max. memory is 7.1 GB. [2020-10-12 21:15:39,228 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.58 ms. Allocated memory was 136.8 MB in the beginning and 202.4 MB in the end (delta: 65.5 MB). Free memory was 99.3 MB in the beginning and 177.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.82 ms. Allocated memory is still 202.4 MB. Free memory was 177.9 MB in the beginning and 175.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.06 ms. Allocated memory is still 202.4 MB. Free memory was 175.8 MB in the beginning and 139.9 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12293.57 ms. Allocated memory was 202.4 MB in the beginning and 385.4 MB in the end (delta: 183.0 MB). Free memory was 139.2 MB in the beginning and 257.5 MB in the end (delta: -118.3 MB). Peak memory consumption was 64.7 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: [L108] 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; [L108] RET, EXPR nondet_tree() [L108] CALL task(nondet_tree()) [L84] 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; [L84] RET, EXPR min(t) [L84] int a = min(t); [L85] int b; [L87] CALL, EXPR size(t) [L79] COND FALSE !(!t) [L80] EXPR t->left [L80] CALL, EXPR size(t->left) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->left) [L80] EXPR t->right [L80] CALL, EXPR size(t->right) [L79] COND TRUE !t [L79] return 0; [L80] RET, EXPR size(t->right) [L80] return size(t->left) + size(t->right) + 1; [L87] RET, EXPR size(t) [L87] int n = size(t); [L88] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L88] RET assume_cycle_if_not(n != 0) [L89] EXPR, FCALL calloc(n, sizeof(int)) [L89] int *x = calloc(n, sizeof(int)); [L90] CALL tree_inorder(t, x, n) [L68] COND FALSE !(!t) [L71] EXPR t->left [L71] CALL, EXPR tree_inorder(t->left, a, i) [L68] COND TRUE !t [L69] return i; [L71] RET, EXPR tree_inorder(t->left, a, i) [L71] i = tree_inorder(t->left, a, i) [L72] EXPR i++ [L72] EXPR t->data [L72] a[i++] = t->data [L73] EXPR t->right [L73] CALL, EXPR tree_inorder(t->right, a, i) [L68] COND TRUE !t [L69] return i; [L73] RET, EXPR tree_inorder(t->right, a, i) [L73] i = tree_inorder(t->right, a, i) [L74] return i; [L90] RET tree_inorder(t, x, n) [L91] EXPR x[0] [L91] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 98 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 257 SDtfs, 458 SDslu, 1099 SDs, 0 SdLazy, 1550 SolverSat, 433 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 34894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 43/45 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...