/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:56:27,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:56:27,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:56:27,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:56:27,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:56:27,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:56:27,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:56:27,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:56:27,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:56:27,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:56:27,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:56:27,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:56:27,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:56:27,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:56:27,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:56:27,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:56:27,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:56:27,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:56:27,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:56:27,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:56:27,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:56:27,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:56:27,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:56:27,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:56:27,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:56:27,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:56:27,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:56:27,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:56:27,721 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:56:27,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:56:27,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:56:27,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:56:27,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:56:27,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:56:27,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:56:27,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:56:27,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:56:27,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:56:27,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:56:27,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:56:27,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:56:27,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:56:27,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:56:27,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:56:27,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:56:27,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:56:27,782 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:56:27,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:56:27,783 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:56:27,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:56:27,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:56:27,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:56:27,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:56:27,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:56:27,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:56:27,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:56:27,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:56:27,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:56:27,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:56:27,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:56:27,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:56:27,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:56:27,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:56:27,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:56:27,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:56:27,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:56:27,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:56:27,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:56:27,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:56:27,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:56:27,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:56:27,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:56:28,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:56:28,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:56:28,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:56:28,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:56:28,301 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:56:28,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 08:56:28,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f8ba325f/dee75387183749bbb9cdb0981b8dc1ea/FLAG8b9a4c165 [2020-09-25 08:56:28,942 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:56:28,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-25 08:56:28,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f8ba325f/dee75387183749bbb9cdb0981b8dc1ea/FLAG8b9a4c165 [2020-09-25 08:56:29,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f8ba325f/dee75387183749bbb9cdb0981b8dc1ea [2020-09-25 08:56:29,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:56:29,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:56:29,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:56:29,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:56:29,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:56:29,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29, skipping insertion in model container [2020-09-25 08:56:29,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:56:29,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:56:29,573 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:56:29,576 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:56:29,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:56:29,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:56:29,743 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:56:29,745 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 08:56:29,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:56:29,797 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:56:29,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29 WrapperNode [2020-09-25 08:56:29,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:56:29,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:56:29,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:56:29,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:56:29,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... [2020-09-25 08:56:29,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:56:29,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:56:29,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:56:29,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:56:29,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:56:29,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:56:29,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:56:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-25 08:56:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:56:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 08:56:29,950 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 08:56:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 08:56:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 08:56:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 08:56:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 08:56:29,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:56:29,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 08:56:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:56:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:56:29,952 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:56:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:56:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 08:56:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-25 08:56:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:56:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:56:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 08:56:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:56:29,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 08:56:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:56:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:56:29,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:56:30,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:56:30,613 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 08:56:30,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:56:30 BoogieIcfgContainer [2020-09-25 08:56:30,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:56:30,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:56:30,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:56:30,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:56:30,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:56:29" (1/3) ... [2020-09-25 08:56:30,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:56:30, skipping insertion in model container [2020-09-25 08:56:30,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:56:29" (2/3) ... [2020-09-25 08:56:30,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:56:30, skipping insertion in model container [2020-09-25 08:56:30,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:56:30" (3/3) ... [2020-09-25 08:56:30,644 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-25 08:56:30,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:56:30,670 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:56:30,694 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:56:30,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:56:30,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:56:30,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:56:30,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:56:30,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:56:30,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:56:30,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:56:30,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:56:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-25 08:56:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 08:56:30,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:30,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:56:30,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-25 08:56:30,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:30,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-25 08:56:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:31,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:31,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:31,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 08:56:31,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:31,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-09-25 08:56:31,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:31,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:56:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 08:56:31,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:56:31,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:56:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:31,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:31,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:56:31,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:31,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:31,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:56:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:31,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:56:31,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:31,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:31,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:31,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:31,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:31,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:56:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:31,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:31,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:31,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:31,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:31,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:56:31,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:31,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:31,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:31,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:31,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:31,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:56:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 08:56:32,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:56:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:32,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:32,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 08:56:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:32,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:32,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:56:32,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:32,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 08:56:32,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:32,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:56:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:56:32,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:32,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:32,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 08:56:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:32,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:32,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:32,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:56:32,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:32,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:56:32,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:32,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:32,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 08:56:32,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 08:56:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:32,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:32,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:56:32,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:32,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:56:32,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:32,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:32,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 08:56:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:32,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:56:32,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-25 08:56:32,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:56:32,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 08:56:32,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885765588] [2020-09-25 08:56:32,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:56:32,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:32,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:56:32,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:56:32,238 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-25 08:56:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:33,550 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-25 08:56:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:56:33,552 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 08:56:33,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:33,575 INFO L225 Difference]: With dead ends: 333 [2020-09-25 08:56:33,575 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 08:56:33,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:56:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 08:56:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-25 08:56:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 08:56:33,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-25 08:56:33,675 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-25 08:56:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:33,676 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-25 08:56:33,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:56:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-25 08:56:33,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:56:33,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:33,683 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:56:33,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:56:33,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:33,684 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-25 08:56:33,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:33,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380971172] [2020-09-25 08:56:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:33,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:34,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:37,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:37,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 08:56:37,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:56:37,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4200 [2020-09-25 08:56:37,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:37,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:56:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 08:56:37,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:56:37,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:37,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:37,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:37,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:37,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:56:37,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:37,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:37,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:37,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:37,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:56:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:37,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:37,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:56:37,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:37,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:56:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:56:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:38,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:56:38,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:56:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:56:38,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 08:56:38,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:56:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:56:38,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:56:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:38,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:56:38,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:56:38,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:38,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:56:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:38,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:56:38,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:56:38,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:38,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:56:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:56:38,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:56:38,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:38,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:56:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:56:38,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:56:38,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:38,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:56:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:38,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:56:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:56:38,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:56:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:38,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:56:38,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:56:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:56:38,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:56:38,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380971172] [2020-09-25 08:56:38,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:56:38,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:56:38,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301959187] [2020-09-25 08:56:38,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:56:38,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:38,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:56:38,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:56:38,298 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 11 states. [2020-09-25 08:56:39,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:39,447 INFO L93 Difference]: Finished difference Result 304 states and 347 transitions. [2020-09-25 08:56:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:56:39,448 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 08:56:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:39,455 INFO L225 Difference]: With dead ends: 304 [2020-09-25 08:56:39,456 INFO L226 Difference]: Without dead ends: 195 [2020-09-25 08:56:39,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:56:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-25 08:56:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-25 08:56:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-25 08:56:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 208 transitions. [2020-09-25 08:56:39,506 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 208 transitions. Word has length 80 [2020-09-25 08:56:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:39,507 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 208 transitions. [2020-09-25 08:56:39,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:56:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 208 transitions. [2020-09-25 08:56:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 08:56:39,526 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:39,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:56:39,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:56:39,528 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:39,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:39,529 INFO L82 PathProgramCache]: Analyzing trace with hash -252425215, now seen corresponding path program 1 times [2020-09-25 08:56:39,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:39,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247176351] [2020-09-25 08:56:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:39,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:39,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 08:56:44,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:56:44,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:56:44,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:56:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:56:44,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:56:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:44,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:56:44,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 08:56:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:56:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:56:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:44,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 08:56:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:56:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:56:44,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:56:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:56:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:44,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 08:56:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:56:44,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:56:44,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:56:44,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:56:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:56:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:44,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:56:44,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:44,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:56:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:44,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:56:44,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:44,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 08:56:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:56:44,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:56:44,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 08:56:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:44,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:44,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:56:44,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:56:44,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:44,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:44,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:56:44,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:44,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 08:56:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:45,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:45,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:56:45,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:45,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 08:56:45,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:45,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:56:45,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:56:45,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 08:56:45,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:56:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:45,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:45,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:45,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:56:45,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:45,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:56:45,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:45,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:45,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:45,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:56:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:45,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 08:56:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:45,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:45,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 08:56:45,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:45,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:56:45,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:45,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:56:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:45,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:56:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:56:45,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247176351] [2020-09-25 08:56:45,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:56:45,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 08:56:45,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128182990] [2020-09-25 08:56:45,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 08:56:45,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:45,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 08:56:45,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:56:45,236 INFO L87 Difference]: Start difference. First operand 184 states and 208 transitions. Second operand 14 states. [2020-09-25 08:56:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:47,087 INFO L93 Difference]: Finished difference Result 382 states and 441 transitions. [2020-09-25 08:56:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:56:47,087 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 112 [2020-09-25 08:56:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:47,094 INFO L225 Difference]: With dead ends: 382 [2020-09-25 08:56:47,094 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 08:56:47,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2020-09-25 08:56:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 08:56:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2020-09-25 08:56:47,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-09-25 08:56:47,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2020-09-25 08:56:47,145 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 112 [2020-09-25 08:56:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:47,146 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2020-09-25 08:56:47,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 08:56:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2020-09-25 08:56:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 08:56:47,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:47,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:56:47,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:56:47,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:47,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:47,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-25 08:56:47,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:47,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281501376] [2020-09-25 08:56:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:56:47,226 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:56:47,226 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:56:47,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:56:47,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:56:47 BoogieIcfgContainer [2020-09-25 08:56:47,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:56:47,275 INFO L168 Benchmark]: Toolchain (without parser) took 18006.03 ms. Allocated memory was 146.8 MB in the beginning and 347.6 MB in the end (delta: 200.8 MB). Free memory was 103.0 MB in the beginning and 304.5 MB in the end (delta: -201.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:56:47,276 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:56:47,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 524.87 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 180.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-25 08:56:47,280 INFO L168 Benchmark]: Boogie Preprocessor took 67.52 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 177.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:56:47,286 INFO L168 Benchmark]: RCFGBuilder took 761.09 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 135.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:56:47,287 INFO L168 Benchmark]: TraceAbstraction took 16640.71 ms. Allocated memory was 203.9 MB in the beginning and 347.6 MB in the end (delta: 143.7 MB). Free memory was 135.4 MB in the beginning and 304.5 MB in the end (delta: -169.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:56:47,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 524.87 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 180.5 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.52 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 177.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.09 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 135.4 MB in the end (delta: 42.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16640.71 ms. Allocated memory was 203.9 MB in the beginning and 347.6 MB in the end (delta: 143.7 MB). Free memory was 135.4 MB in the beginning and 304.5 MB in the end (delta: -169.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 513 SDtfs, 1038 SDslu, 1565 SDs, 0 SdLazy, 2648 SolverSat, 411 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 93487 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 37/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...