/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 14:47:55,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 14:47:55,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 14:47:55,733 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 14:47:55,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 14:47:55,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 14:47:55,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 14:47:55,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 14:47:55,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 14:47:55,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 14:47:55,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 14:47:55,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 14:47:55,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 14:47:55,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 14:47:55,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 14:47:55,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 14:47:55,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 14:47:55,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 14:47:55,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 14:47:55,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 14:47:55,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 14:47:55,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 14:47:55,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 14:47:55,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 14:47:55,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 14:47:55,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 14:47:55,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 14:47:55,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 14:47:55,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 14:47:55,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 14:47:55,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 14:47:55,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 14:47:55,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 14:47:55,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 14:47:55,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 14:47:55,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 14:47:55,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 14:47:55,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 14:47:55,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 14:47:55,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 14:47:55,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 14:47:55,818 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 14:47:55,881 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 14:47:55,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 14:47:55,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 14:47:55,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 14:47:55,884 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 14:47:55,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 14:47:55,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 14:47:55,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 14:47:55,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 14:47:55,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 14:47:55,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 14:47:55,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 14:47:55,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 14:47:55,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 14:47:55,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 14:47:55,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 14:47:55,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 14:47:55,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 14:47:55,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 14:47:55,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 14:47:55,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 14:47:55,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:47:55,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 14:47:55,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 14:47:55,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 14:47:55,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 14:47:55,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 14:47:55,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 14:47:55,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 14:47:55,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 14:47:56,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 14:47:56,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 14:47:56,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 14:47:56,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 14:47:56,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 14:47:56,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-29 14:47:56,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ada7b33f/ad93e87db52c4e3c9707648d43d85d93/FLAGeea3d9980 [2020-10-29 14:47:57,175 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 14:47:57,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-29 14:47:57,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ada7b33f/ad93e87db52c4e3c9707648d43d85d93/FLAGeea3d9980 [2020-10-29 14:47:57,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ada7b33f/ad93e87db52c4e3c9707648d43d85d93 [2020-10-29 14:47:57,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 14:47:57,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 14:47:57,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:57,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 14:47:57,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 14:47:57,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c3da1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57, skipping insertion in model container [2020-10-29 14:47:57,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 14:47:57,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 14:47:57,764 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-29 14:47:57,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:57,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 14:47:57,836 WARN L1500 CHandler]: Possible shadowing of function min [2020-10-29 14:47:57,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 14:47:57,873 INFO L208 MainTranslator]: Completed translation [2020-10-29 14:47:57,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57 WrapperNode [2020-10-29 14:47:57,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 14:47:57,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 14:47:57,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 14:47:57,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 14:47:57,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... [2020-10-29 14:47:57,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 14:47:57,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 14:47:57,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 14:47:57,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 14:47:57,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 14:47:58,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 14:47:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 14:47:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 14:47:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 14:47:58,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-29 14:47:58,034 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-29 14:47:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 14:47:58,035 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-29 14:47:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 14:47:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 14:47:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 14:47:58,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 14:47:58,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 14:47:58,037 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-29 14:47:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-29 14:47:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-29 14:47:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 14:47:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 14:47:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 14:47:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 14:47:58,636 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 14:47:58,637 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 14:47:58,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:58 BoogieIcfgContainer [2020-10-29 14:47:58,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 14:47:58,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 14:47:58,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 14:47:58,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 14:47:58,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 02:47:57" (1/3) ... [2020-10-29 14:47:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54486e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:58, skipping insertion in model container [2020-10-29 14:47:58,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 02:47:57" (2/3) ... [2020-10-29 14:47:58,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54486e07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 02:47:58, skipping insertion in model container [2020-10-29 14:47:58,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 02:47:58" (3/3) ... [2020-10-29 14:47:58,648 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-10-29 14:47:58,667 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 14:47:58,678 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 14:47:58,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 14:47:58,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 14:47:58,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 14:47:58,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 14:47:58,725 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 14:47:58,725 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 14:47:58,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 14:47:58,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 14:47:58,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 14:47:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2020-10-29 14:47:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 14:47:58,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:47:58,760 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] [2020-10-29 14:47:58,761 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:47:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:47:58,768 INFO L82 PathProgramCache]: Analyzing trace with hash 51345433, now seen corresponding path program 1 times [2020-10-29 14:47:58,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:47:58,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117141065] [2020-10-29 14:47:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:47:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 14:47:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-29 14:47:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 14:47:59,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 14:47:59,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:47:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:59,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 14:47:59,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:59,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:47:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:47:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 14:47:59,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:59,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:47:59,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:47:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:59,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 14:47:59,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:59,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:59,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 14:47:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:59,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:47:59,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:47:59,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 14:47:59,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:47:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:47:59,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 14:47:59,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:47:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:47:59,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 14:47:59,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:47:59,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:59,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 14:47:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:47:59,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:47:59,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:47:59,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:47:59,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:47:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:47:59,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:47:59,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:47:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:47:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:47:59,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:47:59,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:47:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:47:59,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117141065] [2020-10-29 14:47:59,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:47:59,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 14:47:59,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931726464] [2020-10-29 14:47:59,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 14:47:59,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:47:59,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 14:47:59,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 14:47:59,652 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 6 states. [2020-10-29 14:48:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:00,258 INFO L93 Difference]: Finished difference Result 173 states and 227 transitions. [2020-10-29 14:48:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 14:48:00,260 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-29 14:48:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:00,273 INFO L225 Difference]: With dead ends: 173 [2020-10-29 14:48:00,274 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 14:48:00,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 14:48:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 14:48:00,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 89. [2020-10-29 14:48:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 14:48:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 110 transitions. [2020-10-29 14:48:00,349 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 110 transitions. Word has length 45 [2020-10-29 14:48:00,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:00,350 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 110 transitions. [2020-10-29 14:48:00,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 14:48:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 110 transitions. [2020-10-29 14:48:00,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 14:48:00,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:00,353 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] [2020-10-29 14:48:00,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 14:48:00,354 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:00,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:00,355 INFO L82 PathProgramCache]: Analyzing trace with hash -766303017, now seen corresponding path program 1 times [2020-10-29 14:48:00,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:00,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300811135] [2020-10-29 14:48:00,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 14:48:00,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-29 14:48:00,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 14:48:00,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 14:48:00,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:00,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:00,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:00,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:00,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:48:00,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:00,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:00,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:00,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 14:48:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:48:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:01,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:01,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:01,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:01,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:01,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:01,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:01,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 14:48:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:01,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 14:48:01,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:48:01,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:01,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:01,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:01,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 14:48:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:01,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 14:48:01,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:01,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:01,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:01,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:01,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 14:48:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 14:48:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:01,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 14:48:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:01,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:01,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:01,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:01,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:01,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:01,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-29 14:48:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:01,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 14:48:01,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300811135] [2020-10-29 14:48:01,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 14:48:01,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-29 14:48:01,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623591650] [2020-10-29 14:48:01,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:48:01,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:01,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:48:01,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:48:01,245 INFO L87 Difference]: Start difference. First operand 89 states and 110 transitions. Second operand 11 states. [2020-10-29 14:48:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:02,103 INFO L93 Difference]: Finished difference Result 156 states and 199 transitions. [2020-10-29 14:48:02,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 14:48:02,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-29 14:48:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:02,107 INFO L225 Difference]: With dead ends: 156 [2020-10-29 14:48:02,107 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 14:48:02,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-29 14:48:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 14:48:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2020-10-29 14:48:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 14:48:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 114 transitions. [2020-10-29 14:48:02,129 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 114 transitions. Word has length 45 [2020-10-29 14:48:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:02,130 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 114 transitions. [2020-10-29 14:48:02,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:48:02,130 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 114 transitions. [2020-10-29 14:48:02,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 14:48:02,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:02,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:02,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 14:48:02,133 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:02,134 INFO L82 PathProgramCache]: Analyzing trace with hash 557373118, now seen corresponding path program 1 times [2020-10-29 14:48:02,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:02,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916883027] [2020-10-29 14:48:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 14:48:05,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:48:05,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-29 14:48:05,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 14:48:05,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 14:48:05,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:05,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:48:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:05,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:05,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:05,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:05,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:05,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 14:48:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:48:05,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 14:48:05,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:48:05,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:05,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:05,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:05,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:05,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:48:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:05,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:48:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:05,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:05,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:05,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 14:48:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-29 14:48:05,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916883027] [2020-10-29 14:48:05,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:05,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:48:05,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522192077] [2020-10-29 14:48:05,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:48:05,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:05,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:48:05,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:48:05,564 INFO L87 Difference]: Start difference. First operand 91 states and 114 transitions. Second operand 11 states. [2020-10-29 14:48:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:06,780 INFO L93 Difference]: Finished difference Result 156 states and 197 transitions. [2020-10-29 14:48:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:48:06,781 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-29 14:48:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:06,783 INFO L225 Difference]: With dead ends: 156 [2020-10-29 14:48:06,783 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 14:48:06,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-29 14:48:06,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 14:48:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 97. [2020-10-29 14:48:06,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-29 14:48:06,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 122 transitions. [2020-10-29 14:48:06,803 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 122 transitions. Word has length 57 [2020-10-29 14:48:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:06,803 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 122 transitions. [2020-10-29 14:48:06,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:48:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 122 transitions. [2020-10-29 14:48:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 14:48:06,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:06,806 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:06,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 14:48:06,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:06,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:06,807 INFO L82 PathProgramCache]: Analyzing trace with hash -348500245, now seen corresponding path program 1 times [2020-10-29 14:48:06,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:06,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520274674] [2020-10-29 14:48:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:06,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:09,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3102 [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:09,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 14:48:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 14:48:09,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 14:48:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:10,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:10,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:10,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:48:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:10,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 14:48:10,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 14:48:10,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 14:48:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:48:10,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:48:10,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:10,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:10,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 14:48:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:10,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:10,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 14:48:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:10,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:10,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 14:48:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:48:10,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:10,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:48:10,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:10,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:10,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 14:48:10,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520274674] [2020-10-29 14:48:10,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:10,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 14:48:10,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709501590] [2020-10-29 14:48:10,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 14:48:10,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 14:48:10,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 14:48:10,467 INFO L87 Difference]: Start difference. First operand 97 states and 122 transitions. Second operand 11 states. [2020-10-29 14:48:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:11,818 INFO L93 Difference]: Finished difference Result 172 states and 220 transitions. [2020-10-29 14:48:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 14:48:11,818 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-10-29 14:48:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:11,823 INFO L225 Difference]: With dead ends: 172 [2020-10-29 14:48:11,824 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 14:48:11,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-29 14:48:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 14:48:11,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 99. [2020-10-29 14:48:11,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 14:48:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 125 transitions. [2020-10-29 14:48:11,872 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 125 transitions. Word has length 69 [2020-10-29 14:48:11,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:11,873 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 125 transitions. [2020-10-29 14:48:11,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 14:48:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 125 transitions. [2020-10-29 14:48:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 14:48:11,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:11,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:11,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 14:48:11,882 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1659395844, now seen corresponding path program 1 times [2020-10-29 14:48:11,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:11,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562110308] [2020-10-29 14:48:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:11,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:11,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:16,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 14:48:16,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 14:48:16,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4965 [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 14:48:16,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:16,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 14:48:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:16,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:16,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:16,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:16,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:16,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:16,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:16,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:16,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:16,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-29 14:48:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:17,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 14:48:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-29 14:48:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 14:48:17,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:17,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 14:48:17,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 14:48:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:17,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 14:48:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:48:17,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 14:48:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:48:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:17,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 14:48:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-29 14:48:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 14:48:17,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:17,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 14:48:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 14:48:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 14:48:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 14:48:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 14:48:17,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 14:48:17,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 14:48:17,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 14:48:17,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 14:48:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 14:48:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 14:48:17,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:17,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 14:48:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 14:48:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 14:48:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 14:48:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 14:48:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 14:48:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 14:48:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 14:48:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 14:48:17,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 14:48:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 14:48:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 14:48:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 14:48:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 14:48:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-29 14:48:17,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562110308] [2020-10-29 14:48:17,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 14:48:17,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 14:48:17,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992529709] [2020-10-29 14:48:17,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 14:48:17,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 14:48:17,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 14:48:17,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-29 14:48:17,344 INFO L87 Difference]: Start difference. First operand 99 states and 125 transitions. Second operand 12 states. [2020-10-29 14:48:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 14:48:18,684 INFO L93 Difference]: Finished difference Result 174 states and 222 transitions. [2020-10-29 14:48:18,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 14:48:18,684 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-29 14:48:18,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 14:48:18,689 INFO L225 Difference]: With dead ends: 174 [2020-10-29 14:48:18,689 INFO L226 Difference]: Without dead ends: 103 [2020-10-29 14:48:18,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-29 14:48:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-29 14:48:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2020-10-29 14:48:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-29 14:48:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2020-10-29 14:48:18,709 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 82 [2020-10-29 14:48:18,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 14:48:18,711 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2020-10-29 14:48:18,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 14:48:18,711 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2020-10-29 14:48:18,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 14:48:18,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 14:48:18,714 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 14:48:18,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 14:48:18,714 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 14:48:18,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 14:48:18,716 INFO L82 PathProgramCache]: Analyzing trace with hash 918285121, now seen corresponding path program 1 times [2020-10-29 14:48:18,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 14:48:18,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496919069] [2020-10-29 14:48:18,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 14:48:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 14:48:18,751 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 14:48:18,751 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 14:48:18,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 14:48:18,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 02:48:18 BoogieIcfgContainer [2020-10-29 14:48:18,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 14:48:18,785 INFO L168 Benchmark]: Toolchain (without parser) took 21260.25 ms. Allocated memory was 152.0 MB in the beginning and 335.5 MB in the end (delta: 183.5 MB). Free memory was 127.8 MB in the beginning and 292.9 MB in the end (delta: -165.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:48:18,786 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 14:48:18,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.79 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 115.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 14:48:18,788 INFO L168 Benchmark]: Boogie Preprocessor took 65.35 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 113.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:48:18,789 INFO L168 Benchmark]: RCFGBuilder took 697.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 116.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-10-29 14:48:18,790 INFO L168 Benchmark]: TraceAbstraction took 20141.85 ms. Allocated memory was 152.0 MB in the beginning and 335.5 MB in the end (delta: 183.5 MB). Free memory was 116.2 MB in the beginning and 292.9 MB in the end (delta: -176.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-10-29 14:48:18,793 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.79 ms. Allocated memory is still 152.0 MB. Free memory was 127.1 MB in the beginning and 115.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.35 ms. Allocated memory is still 152.0 MB. Free memory was 115.3 MB in the beginning and 113.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 697.12 ms. Allocated memory is still 152.0 MB. Free memory was 113.0 MB in the beginning and 116.7 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 20141.85 ms. Allocated memory was 152.0 MB in the beginning and 335.5 MB in the end (delta: 183.5 MB). Free memory was 116.2 MB in the beginning and 292.9 MB in the end (delta: -176.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 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: [L105] CALL, EXPR nondet_tree() [L25] COND FALSE !(__VERIFIER_nondet_bool()) [L28] struct node *n = (struct node *)malloc(sizeof(struct node)); [L29] n->data = __VERIFIER_nondet_int() [L30] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L30] RET, EXPR nondet_tree() [L30] n->left = nondet_tree() [L31] CALL, EXPR nondet_tree() [L25] COND TRUE __VERIFIER_nondet_bool() [L26] return 0; [L31] RET, EXPR nondet_tree() [L31] n->right = nondet_tree() [L32] return n; [L105] RET, EXPR nondet_tree() [L105] CALL task(nondet_tree()) [L83] CALL, EXPR min(t) [L37] COND FALSE !(!n) [L40] EXPR n->left [L40] CALL, EXPR min(n->left) [L37] COND TRUE !n [L38] return 2147483647; [L40] RET, EXPR min(n->left) [L40] int a = min(n->left); [L41] EXPR n->right [L41] CALL, EXPR min(n->right) [L37] COND TRUE !n [L38] return 2147483647; [L41] RET, EXPR min(n->right) [L41] int b = min(n->right); [L42] COND TRUE a <= b [L42] return a; [L83] RET, EXPR min(t) [L83] int a = min(t); [L84] int b; [L86] CALL, EXPR size(t) [L78] COND FALSE !(!t) [L79] EXPR t->left [L79] CALL, EXPR size(t->left) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->left) [L79] EXPR t->right [L79] CALL, EXPR size(t->right) [L78] COND TRUE !t [L78] return 0; [L79] RET, EXPR size(t->right) [L79] return size(t->left) + size(t->right) + 1; [L86] RET, EXPR size(t) [L86] int n = size(t); [L87] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L87] RET assume_abort_if_not(n != 0) [L88] EXPR, FCALL calloc(n, sizeof(int)) [L88] int *x = calloc(n, sizeof(int)); [L89] CALL tree_inorder(t, x, n) [L67] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR tree_inorder(t->left, a, i) [L67] COND TRUE !t [L68] return i; [L70] RET, EXPR tree_inorder(t->left, a, i) [L70] i = tree_inorder(t->left, a, i) [L71] EXPR i++ [L71] EXPR t->data [L71] a[i++] = t->data [L72] EXPR t->right [L72] CALL, EXPR tree_inorder(t->right, a, i) [L67] COND TRUE !t [L68] return i; [L72] RET, EXPR tree_inorder(t->right, a, i) [L72] i = tree_inorder(t->right, a, i) [L73] return i; [L89] RET tree_inorder(t, x, n) [L90] EXPR x[0] [L90] CALL __VERIFIER_assert(a == x[0]) [L16] COND TRUE !cond [L16] CALL reach_error() [L14] __assert_fail("0", "tree_del_iter_incorrect.c", 14, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 100 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 20.0s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 419 SDtfs, 607 SDslu, 1177 SDs, 0 SdLazy, 1892 SolverSat, 643 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 293 ConstructedInterpolants, 0 QuantifiedInterpolants, 78921 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 66/72 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...