/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:11:55,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:11:55,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:11:55,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:11:55,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:11:55,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:11:55,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:11:55,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:11:55,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:11:55,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:11:55,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:11:55,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:11:55,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:11:55,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:11:55,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:11:55,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:11:55,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:11:55,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:11:55,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:11:55,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:11:55,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:11:55,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:11:55,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:11:55,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:11:55,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:11:55,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:11:55,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:11:55,940 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:11:55,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:11:55,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:11:55,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:11:55,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:11:55,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:11:55,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:11:55,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:11:55,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:11:55,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:11:55,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:11:55,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:11:55,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:11:55,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:11:55,950 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 01:11:55,983 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:11:55,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:11:55,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:11:55,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:11:55,985 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:11:55,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:11:55,986 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:11:55,986 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:11:55,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:11:55,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:11:55,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:11:55,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:11:55,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:11:55,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:11:55,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:11:55,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:11:55,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:11:55,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:11:55,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:11:55,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:11:55,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:11:55,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:55,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:11:55,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:11:55,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:11:55,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:11:55,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:11:55,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:11:55,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:11:55,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:11:56,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:11:56,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:11:56,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:11:56,526 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:11:56,526 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:11:56,527 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 01:11:56,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995338497/26e653039df14c9fa54bb06d3543f1f2/FLAGec3e10117 [2020-09-25 01:11:57,179 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:11:57,180 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter.c [2020-09-25 01:11:57,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995338497/26e653039df14c9fa54bb06d3543f1f2/FLAGec3e10117 [2020-09-25 01:11:57,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/995338497/26e653039df14c9fa54bb06d3543f1f2 [2020-09-25 01:11:57,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:11:57,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:11:57,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:57,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:11:57,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:11:57,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:57" (1/1) ... [2020-09-25 01:11:57,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc80312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:57, skipping insertion in model container [2020-09-25 01:11:57,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:57" (1/1) ... [2020-09-25 01:11:57,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:11:57,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:11:57,797 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 01:11:57,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:57,832 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:11:57,860 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 01:11:57,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:58,006 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:11:58,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58 WrapperNode [2020-09-25 01:11:58,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:58,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:11:58,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:11:58,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:11:58,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (1/1) ... [2020-09-25 01:11:58,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:11:58,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:11:58,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:11:58,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:11:58,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (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 01:11:58,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:11:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:11:58,181 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 01:11:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:11:58,182 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 01:11:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 01:11:58,183 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 01:11:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 01:11:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 01:11:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 01:11:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:11:58,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 01:11:58,184 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 01:11:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 01:11:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 01:11:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:11:58,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 01:11:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 01:11:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:11:58,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:11:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 01:11:58,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 01:11:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:11:58,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 01:11:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 01:11:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:11:58,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:11:58,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:11:58,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:11:58,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:11:58,786 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 01:11:58,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:58 BoogieIcfgContainer [2020-09-25 01:11:58,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:11:58,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:11:58,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:11:58,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:11:58,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:11:57" (1/3) ... [2020-09-25 01:11:58,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a9f415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:58, skipping insertion in model container [2020-09-25 01:11:58,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:58" (2/3) ... [2020-09-25 01:11:58,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36a9f415 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:58, skipping insertion in model container [2020-09-25 01:11:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:58" (3/3) ... [2020-09-25 01:11:58,804 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter.c [2020-09-25 01:11:58,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:11:58,827 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:11:58,850 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:11:58,882 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:11:58,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:11:58,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:11:58,883 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:11:58,883 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:11:58,883 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:11:58,883 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:11:58,883 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:11:58,913 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-09-25 01:11:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 01:11:58,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:58,930 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 01:11:58,933 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1657225032, now seen corresponding path program 1 times [2020-09-25 01:11:58,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:58,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036954898] [2020-09-25 01:11:58,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:59,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:59,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 01:11:59,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:59,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 01:11:59,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:11:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 01:11:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 01:11:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:12:00,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:00,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:12:00,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:00,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:00,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 01:12:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:00,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:12:00,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:00,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:00,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 01:12:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:12:00,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:00,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 01:12:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:00,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:12:00,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:12:00,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:00,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:12:00,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:00,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 01:12:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:12:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:12:00,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:00,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:12:00,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 01:12:00,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 01:12:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:00,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:12:00,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:12:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 01:12:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:00,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:00,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:00,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:00,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:12:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:00,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 01:12:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:00,271 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 01:12:00,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036954898] [2020-09-25 01:12:00,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:12:00,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 01:12:00,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444551855] [2020-09-25 01:12:00,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:12:00,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:00,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:12:00,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:12:00,307 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 11 states. [2020-09-25 01:12:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:01,644 INFO L93 Difference]: Finished difference Result 366 states and 427 transitions. [2020-09-25 01:12:01,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 01:12:01,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 01:12:01,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:01,678 INFO L225 Difference]: With dead ends: 366 [2020-09-25 01:12:01,679 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 01:12:01,694 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 01:12:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 01:12:01,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2020-09-25 01:12:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-25 01:12:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-09-25 01:12:01,776 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 60 [2020-09-25 01:12:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:01,776 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-09-25 01:12:01,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:12:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-09-25 01:12:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 01:12:01,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:01,782 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 01:12:01,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:12:01,783 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:01,783 INFO L82 PathProgramCache]: Analyzing trace with hash -290171790, now seen corresponding path program 1 times [2020-09-25 01:12:01,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:01,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805978476] [2020-09-25 01:12:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:01,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 01:12:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:12:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4234 [2020-09-25 01:12:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:12:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 01:12:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 01:12:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:12:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:12:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:06,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 01:12:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:06,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:12:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 01:12:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:06,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:06,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 01:12:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 01:12:06,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 01:12:06,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:06,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 01:12:06,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:12:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:06,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:12:06,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 01:12:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:12:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 01:12:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:12:06,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 01:12:06,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:12:06,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 01:12:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:06,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:12:06,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:06,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:06,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:12:06,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 01:12:06,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:06,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:06,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:06,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:06,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 01:12:06,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:06,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:12:06,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:06,576 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 01:12:06,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805978476] [2020-09-25 01:12:06,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:12:06,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 01:12:06,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119948835] [2020-09-25 01:12:06,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 01:12:06,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 01:12:06,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:12:06,580 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 11 states. [2020-09-25 01:12:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:08,011 INFO L93 Difference]: Finished difference Result 340 states and 382 transitions. [2020-09-25 01:12:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:12:08,011 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 01:12:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:08,014 INFO L225 Difference]: With dead ends: 340 [2020-09-25 01:12:08,015 INFO L226 Difference]: Without dead ends: 215 [2020-09-25 01:12:08,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 01:12:08,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-25 01:12:08,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2020-09-25 01:12:08,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-25 01:12:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2020-09-25 01:12:08,039 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 80 [2020-09-25 01:12:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:08,040 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2020-09-25 01:12:08,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 01:12:08,040 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2020-09-25 01:12:08,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 01:12:08,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:08,045 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 01:12:08,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:12:08,045 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:08,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:08,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1268161097, now seen corresponding path program 1 times [2020-09-25 01:12:08,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:08,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168934170] [2020-09-25 01:12:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:08,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:08,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:08,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:09,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 01:12:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 01:12:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 01:12:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:12:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 01:12:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 01:12:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:13,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:12:13,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:13,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 01:12:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:13,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:12:13,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:13,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:12:13,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 01:12:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:13,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 01:12:13,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:13,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 01:12:13,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 01:12:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 01:12:13,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:12:13,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 01:12:13,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:13,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:13,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:12:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:12:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:13,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:13,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:13,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:13,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 01:12:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:13,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:13,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:13,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 01:12:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:12:13,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:12:13,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:12:13,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 01:12:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 01:12:13,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 01:12:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 01:12:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 01:12:13,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 01:12:13,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:13,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 01:12:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:13,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 01:12:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:12:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:12:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:13,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:12:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:13,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:13,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:13,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:13,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:13,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:12:13,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:13,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:13,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:12:13,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:13,728 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 01:12:13,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168934170] [2020-09-25 01:12:13,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:12:13,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 01:12:13,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36256831] [2020-09-25 01:12:13,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 01:12:13,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:13,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 01:12:13,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 01:12:13,733 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand 13 states. [2020-09-25 01:12:15,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:15,244 INFO L93 Difference]: Finished difference Result 366 states and 414 transitions. [2020-09-25 01:12:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 01:12:15,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-09-25 01:12:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:15,249 INFO L225 Difference]: With dead ends: 366 [2020-09-25 01:12:15,250 INFO L226 Difference]: Without dead ends: 217 [2020-09-25 01:12:15,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:12:15,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-25 01:12:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 205. [2020-09-25 01:12:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-25 01:12:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 232 transitions. [2020-09-25 01:12:15,273 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 232 transitions. Word has length 112 [2020-09-25 01:12:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:15,274 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 232 transitions. [2020-09-25 01:12:15,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 01:12:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 232 transitions. [2020-09-25 01:12:15,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 01:12:15,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:15,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:12:15,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:12:15,280 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 311371809, now seen corresponding path program 1 times [2020-09-25 01:12:15,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:15,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285992182] [2020-09-25 01:12:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 01:12:20,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:12:20,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 01:12:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:12:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 01:12:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 01:12:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:12:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:12:20,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 01:12:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 01:12:20,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:12:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 01:12:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 01:12:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 01:12:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 01:12:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:12:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-25 01:12:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 01:12:20,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 01:12:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 01:12:20,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 01:12:20,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:12:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 01:12:20,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 01:12:20,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 01:12:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:20,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:20,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:20,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 01:12:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:12:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:20,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:12:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:20,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 01:12:20,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 01:12:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 01:12:20,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:12:20,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 01:12:20,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:20,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 01:12:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 01:12:20,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 01:12:20,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 01:12:20,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 01:12:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 01:12:20,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 01:12:20,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 01:12:20,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:20,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:20,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 01:12:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:20,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:20,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:12:20,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:20,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:21,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:21,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:12:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 01:12:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:12:21,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:12:21,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:12:21,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 01:12:21,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:12:21,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 01:12:21,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:12:21,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:12:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:12:21,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:12:21,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:12:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 01:12:21,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285992182] [2020-09-25 01:12:21,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 01:12:21,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 01:12:21,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040183750] [2020-09-25 01:12:21,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 01:12:21,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:12:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 01:12:21,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 01:12:21,065 INFO L87 Difference]: Start difference. First operand 205 states and 232 transitions. Second operand 14 states. [2020-09-25 01:12:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:12:22,655 INFO L93 Difference]: Finished difference Result 368 states and 416 transitions. [2020-09-25 01:12:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 01:12:22,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 138 [2020-09-25 01:12:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:12:22,658 INFO L225 Difference]: With dead ends: 368 [2020-09-25 01:12:22,658 INFO L226 Difference]: Without dead ends: 216 [2020-09-25 01:12:22,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-09-25 01:12:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-25 01:12:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 207. [2020-09-25 01:12:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-25 01:12:22,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 235 transitions. [2020-09-25 01:12:22,690 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 235 transitions. Word has length 138 [2020-09-25 01:12:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:12:22,690 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 235 transitions. [2020-09-25 01:12:22,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 01:12:22,691 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 235 transitions. [2020-09-25 01:12:22,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 01:12:22,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:12:22,694 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 01:12:22,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 01:12:22,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:12:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:12:22,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1130815571, now seen corresponding path program 1 times [2020-09-25 01:12:22,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:12:22,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225447875] [2020-09-25 01:12:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:12:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:12:22,745 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:12:22,745 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:12:22,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 01:12:22,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:12:22 BoogieIcfgContainer [2020-09-25 01:12:22,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:12:22,804 INFO L168 Benchmark]: Toolchain (without parser) took 25290.62 ms. Allocated memory was 136.3 MB in the beginning and 443.5 MB in the end (delta: 307.2 MB). Free memory was 99.2 MB in the beginning and 407.5 MB in the end (delta: -308.3 MB). Peak memory consumption was 327.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,805 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 117.9 MB in the beginning and 117.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 489.90 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 177.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,806 INFO L168 Benchmark]: Boogie Preprocessor took 72.71 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,807 INFO L168 Benchmark]: RCFGBuilder took 712.99 ms. Allocated memory is still 200.8 MB. Free memory was 175.4 MB in the beginning and 129.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,808 INFO L168 Benchmark]: TraceAbstraction took 24004.71 ms. Allocated memory was 200.8 MB in the beginning and 443.5 MB in the end (delta: 242.7 MB). Free memory was 129.8 MB in the beginning and 407.5 MB in the end (delta: -277.7 MB). Peak memory consumption was 293.5 MB. Max. memory is 7.1 GB. [2020-09-25 01:12:22,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 117.9 MB in the beginning and 117.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 489.90 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 98.7 MB in the beginning and 177.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.71 ms. Allocated memory is still 200.8 MB. Free memory was 177.5 MB in the beginning and 175.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 712.99 ms. Allocated memory is still 200.8 MB. Free memory was 175.4 MB in the beginning and 129.8 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24004.71 ms. Allocated memory was 200.8 MB in the beginning and 443.5 MB in the end (delta: 242.7 MB). Free memory was 129.8 MB in the beginning and 407.5 MB in the end (delta: -277.7 MB). Peak memory consumption was 293.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [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, 206 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 720 SDtfs, 1841 SDslu, 1951 SDs, 0 SdLazy, 4070 SolverSat, 569 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.1s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 231387 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 76/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...