/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=SMALLEST --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/elimination_max_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:15:57,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:15:57,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:15:57,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:15:57,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:15:57,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:15:57,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:15:57,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:15:57,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:15:57,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:15:57,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:15:57,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:15:57,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:15:57,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:15:57,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:15:57,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:15:57,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:15:57,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:15:57,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:15:57,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:15:57,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:15:57,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:15:57,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:15:57,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:15:57,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:15:57,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:15:57,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:15:57,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:15:57,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:15:57,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:15:57,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:15:57,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:15:57,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:15:57,751 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:15:57,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:15:57,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:15:57,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:15:57,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:15:57,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:15:57,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:15:57,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:15:57,757 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 [2020-09-24 18:15:57,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:15:57,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:15:57,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:15:57,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:15:57,785 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:15:57,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:15:57,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:15:57,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:15:57,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:15:57,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:15:57,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:15:57,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:15:57,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:15:57,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:15:57,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:15:57,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:15:57,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:15:57,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:15:57,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:15:57,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:15:57,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:15:57,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:15:57,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:15:57,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:15:57,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:15:57,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:15:57,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:15:57,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:15:57,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:15:57,791 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:15:58,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:15:58,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:15:58,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:15:58,297 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:15:58,298 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:15:58,299 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 18:15:58,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2404c8edb/8ca79e59cfe54a199f6d2a128ec3b22a/FLAGb1b554b18 [2020-09-24 18:15:58,953 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:15:58,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/elimination_max_rec.c [2020-09-24 18:15:58,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2404c8edb/8ca79e59cfe54a199f6d2a128ec3b22a/FLAGb1b554b18 [2020-09-24 18:15:59,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2404c8edb/8ca79e59cfe54a199f6d2a128ec3b22a [2020-09-24 18:15:59,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:15:59,295 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:15:59,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:15:59,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:15:59,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:15:59,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6870637f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59, skipping insertion in model container [2020-09-24 18:15:59,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:15:59,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:15:59,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:15:59,581 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:15:59,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:15:59,627 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:15:59,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59 WrapperNode [2020-09-24 18:15:59,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:15:59,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:15:59,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:15:59,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:15:59,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (1/1) ... [2020-09-24 18:15:59,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:15:59,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:15:59,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:15:59,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:15:59,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (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 [2020-09-24 18:15:59,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:15:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:15:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 18:15:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:15:59,834 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 18:15:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:15:59,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 18:15:59,835 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:15:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:15:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 18:15:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:15:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:15:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:15:59,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 18:15:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:15:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:15:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:15:59,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:16:00,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:16:00,207 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:16:00,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:00 BoogieIcfgContainer [2020-09-24 18:16:00,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:16:00,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:16:00,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:16:00,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:16:00,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:15:59" (1/3) ... [2020-09-24 18:16:00,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535abb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:00, skipping insertion in model container [2020-09-24 18:16:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:15:59" (2/3) ... [2020-09-24 18:16:00,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5535abb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:16:00, skipping insertion in model container [2020-09-24 18:16:00,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:16:00" (3/3) ... [2020-09-24 18:16:00,223 INFO L109 eAbstractionObserver]: Analyzing ICFG elimination_max_rec.c [2020-09-24 18:16:00,234 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:16:00,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:16:00,267 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:16:00,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:16:00,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:16:00,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:16:00,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:16:00,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:16:00,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:16:00,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:16:00,297 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:16:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2020-09-24 18:16:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 18:16:00,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:00,331 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] [2020-09-24 18:16:00,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1490874143, now seen corresponding path program 1 times [2020-09-24 18:16:00,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:00,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918226501] [2020-09-24 18:16:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:00,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:01,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:16:01,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-24 18:16:01,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:16:01,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 18:16:01,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 18:16:01,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:16:01,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:01,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:01,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:01,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:01,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:01,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:01,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:01,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:01,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:01,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:01,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:01,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:01,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:01,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:01,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:01,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:01,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 18:16:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:01,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:01,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:01,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:01,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:01,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:16:01,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:01,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:01,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:01,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:01,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918226501] [2020-09-24 18:16:01,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:01,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:16:01,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789330765] [2020-09-24 18:16:01,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:16:01,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:01,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:16:01,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:16:01,360 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 10 states. [2020-09-24 18:16:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:02,299 INFO L93 Difference]: Finished difference Result 209 states and 241 transitions. [2020-09-24 18:16:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:16:02,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-09-24 18:16:02,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:02,317 INFO L225 Difference]: With dead ends: 209 [2020-09-24 18:16:02,317 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 18:16:02,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:16:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 18:16:02,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 108. [2020-09-24 18:16:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-24 18:16:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2020-09-24 18:16:02,403 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 31 [2020-09-24 18:16:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:02,404 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2020-09-24 18:16:02,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:16:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2020-09-24 18:16:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:16:02,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:02,408 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:16:02,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:16:02,408 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1249778318, now seen corresponding path program 1 times [2020-09-24 18:16:02,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:02,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385323412] [2020-09-24 18:16:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:02,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:04,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:04,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:16:04,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:04,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2045 [2020-09-24 18:16:04,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:16:04,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:16:04,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:16:04,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:16:04,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:04,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:04,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:04,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:04,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:04,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:04,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:04,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:04,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:04,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:04,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:04,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:04,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:04,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:04,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:04,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:04,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 18:16:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:04,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:04,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:04,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:04,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:04,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:16:04,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:04,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:04,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:04,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:16:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:04,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:04,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:04,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:04,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:16:04,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:16:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:04,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:16:04,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:04,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:04,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385323412] [2020-09-24 18:16:04,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:04,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:16:04,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805828138] [2020-09-24 18:16:04,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:16:04,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:04,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:16:04,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:16:04,734 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand 14 states. [2020-09-24 18:16:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:06,265 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-09-24 18:16:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:16:06,265 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 18:16:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:06,272 INFO L225 Difference]: With dead ends: 205 [2020-09-24 18:16:06,273 INFO L226 Difference]: Without dead ends: 203 [2020-09-24 18:16:06,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-09-24 18:16:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-24 18:16:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 155. [2020-09-24 18:16:06,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 18:16:06,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2020-09-24 18:16:06,329 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 52 [2020-09-24 18:16:06,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:06,330 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2020-09-24 18:16:06,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:16:06,330 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2020-09-24 18:16:06,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:16:06,334 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:06,335 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:16:06,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:16:06,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:06,336 INFO L82 PathProgramCache]: Analyzing trace with hash -448975570, now seen corresponding path program 1 times [2020-09-24 18:16:06,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:06,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539779144] [2020-09-24 18:16:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:06,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 18:16:11,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:16:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:16:11,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:16:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:16:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:16:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:11,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:11,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:11,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:11,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:16:11,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:11,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:11,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:11,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:16:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 18:16:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:11,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:16:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:11,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:11,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:16:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:11,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:11,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:11,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:11,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:16:11,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:11,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:11,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:16:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:16:11,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539779144] [2020-09-24 18:16:11,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:16:11,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 18:16:11,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965091780] [2020-09-24 18:16:11,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:16:11,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:11,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:16:11,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:16:11,657 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand 11 states. [2020-09-24 18:16:12,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:12,212 INFO L93 Difference]: Finished difference Result 218 states and 237 transitions. [2020-09-24 18:16:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:16:12,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 18:16:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:12,214 INFO L225 Difference]: With dead ends: 218 [2020-09-24 18:16:12,214 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 18:16:12,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 18:16:12,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 18:16:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-24 18:16:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-24 18:16:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-09-24 18:16:12,245 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 52 [2020-09-24 18:16:12,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:12,246 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-09-24 18:16:12,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:16:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-09-24 18:16:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 18:16:12,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:16:12,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:16:12,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:16:12,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:16:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:16:12,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1366237712, now seen corresponding path program 1 times [2020-09-24 18:16:12,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:16:12,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653893231] [2020-09-24 18:16:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:16:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:12,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-24 18:16:16,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:16:16,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4408 [2020-09-24 18:16:16,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:16:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 18:16:16,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 18:16:16,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:16:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:16:16,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:16,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:16:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:16,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:16:16,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:16:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:16:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-24 18:16:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 18:16:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:16,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:16:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:16:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:16,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 18:16:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 18:16:16,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:16:16,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:16,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:16:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:16:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:16:16,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:16:16,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:16:16,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 18:16:16,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:16:16,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:16:16,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:16:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:16:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:16:16,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:16:16,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:16:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 18:16:16,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653893231] [2020-09-24 18:16:16,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:16:16,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 18:16:16,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039201512] [2020-09-24 18:16:16,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 18:16:16,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:16:16,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 18:16:16,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 18:16:16,974 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand 15 states. [2020-09-24 18:16:17,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:16:17,791 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-09-24 18:16:17,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:16:17,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-09-24 18:16:17,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:16:17,792 INFO L225 Difference]: With dead ends: 104 [2020-09-24 18:16:17,792 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:16:17,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-09-24 18:16:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:16:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:16:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:16:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:16:17,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2020-09-24 18:16:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:16:17,799 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:16:17,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 18:16:17,800 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:16:17,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:16:17,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:16:17,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:16:18,480 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,480 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,481 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,481 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:18,481 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,481 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,481 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:16:18,482 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:16:18,482 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,482 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2020-09-24 18:16:18,482 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 18:16:18,482 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 18:16:18,482 INFO L268 CegarLoopResult]: For program point L6-3(lines 5 7) no Hoare annotation was computed. [2020-09-24 18:16:18,482 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 18:16:18,483 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 39 48) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:18,483 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 39 48) no Hoare annotation was computed. [2020-09-24 18:16:18,483 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 18:16:18,483 INFO L268 CegarLoopResult]: For program point L46-1(line 46) no Hoare annotation was computed. [2020-09-24 18:16:18,483 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 39 48) no Hoare annotation was computed. [2020-09-24 18:16:18,483 INFO L264 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= (select |#memory_int| |main_#t~malloc10.base|) .cse0))) [2020-09-24 18:16:18,483 INFO L264 CegarLoopResult]: At program point L43(line 43) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 18:16:18,484 INFO L268 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-09-24 18:16:18,484 INFO L264 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:16:18,484 INFO L268 CegarLoopResult]: For program point L43-1(line 43) no Hoare annotation was computed. [2020-09-24 18:16:18,484 INFO L268 CegarLoopResult]: For program point L44-2(line 44) no Hoare annotation was computed. [2020-09-24 18:16:18,484 INFO L268 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2020-09-24 18:16:18,484 INFO L268 CegarLoopResult]: For program point L44-3(line 44) no Hoare annotation was computed. [2020-09-24 18:16:18,485 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 18:16:18,485 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 18:16:18,485 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 18:16:18,485 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 18:16:18,485 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 14 37) the Hoare annotation is: true [2020-09-24 18:16:18,488 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x)) (or .cse0 (not (<= 0 |check_#in~x|)) .cse1 (= (select |#memory_int| check_~a.base) .cse2))))) [2020-09-24 18:16:18,488 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 18:16:18,488 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 18:16:18,488 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,488 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,488 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 18:16:18,489 INFO L268 CegarLoopResult]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2020-09-24 18:16:18,490 INFO L268 CegarLoopResult]: For program point L23-3(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,490 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,490 INFO L268 CegarLoopResult]: For program point L23-5(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,490 INFO L268 CegarLoopResult]: For program point L23-6(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,491 INFO L268 CegarLoopResult]: For program point L23-7(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,491 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:16:18,491 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:16:18,491 INFO L268 CegarLoopResult]: For program point L23-9(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,491 INFO L268 CegarLoopResult]: For program point L23-10(line 23) no Hoare annotation was computed. [2020-09-24 18:16:18,492 INFO L264 CegarLoopResult]: At program point L23-11(lines 23 24) the Hoare annotation is: (let ((.cse1 ((as const (Array Int Int)) 0))) (let ((.cse2 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse0 (+ check_~y 1)) (.cse3 (not (= (select |#memory_int| |check_#in~a.base|) .cse1)))) (and (or (and (<= .cse0 check_~n) (= (select |#memory_int| check_~a.base) .cse1) (<= 1 check_~x)) .cse2 (not (<= 0 |check_#in~x|)) .cse3) (or .cse2 (not (<= 1 |check_#in~x|)) (<= .cse0 |check_#in~n|) .cse3)))) [2020-09-24 18:16:18,492 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 14 37) no Hoare annotation was computed. [2020-09-24 18:16:18,492 INFO L264 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (let ((.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse1 (not (= (select |#memory_int| |check_#in~a.base|) .cse2)))) (and (or .cse0 (not (<= 1 |check_#in~x|)) .cse1 (<= 1 check_~x)) (or (and (= check_~ax~0 0) (= check_~ai~0 0) (= (select |#memory_int| check_~a.base) .cse2)) .cse0 (not (<= 0 |check_#in~x|)) .cse1)))) [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 18:16:18,493 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 18:16:18,494 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 18:16:18,495 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 14 37) no Hoare annotation was computed. [2020-09-24 18:16:18,495 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (let ((.cse1 (not (<= (+ |check_#in~y| 1) |check_#in~n|))) (.cse2 (not (= (select |#memory_int| |check_#in~a.base|) .cse0)))) (and (or (and (< check_~y check_~n) (<= (+ check_~y 1) |check_#in~n|) (<= 0 check_~x) (= (select |#memory_int| check_~a.base) .cse0)) .cse1 (not (<= 0 |check_#in~x|)) .cse2) (or .cse1 (not (<= 1 |check_#in~x|)) .cse2 (<= 1 check_~x))))) [2020-09-24 18:16:18,495 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:16:18,496 INFO L268 CegarLoopResult]: For program point L14(lines 14 37) no Hoare annotation was computed. [2020-09-24 18:16:18,496 INFO L268 CegarLoopResult]: For program point L14-1(lines 14 37) no Hoare annotation was computed. [2020-09-24 18:16:18,496 INFO L268 CegarLoopResult]: For program point L14-2(lines 14 37) no Hoare annotation was computed. [2020-09-24 18:16:18,496 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 10) the Hoare annotation is: true [2020-09-24 18:16:18,496 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 8 10) no Hoare annotation was computed. [2020-09-24 18:16:18,496 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 18:16:18,497 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 18:16:18,497 INFO L268 CegarLoopResult]: For program point L9-3(lines 8 10) no Hoare annotation was computed. [2020-09-24 18:16:18,497 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-24 18:16:18,497 INFO L264 CegarLoopResult]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 18:16:18,498 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,498 INFO L268 CegarLoopResult]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:16:18,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:16:18 BoogieIcfgContainer [2020-09-24 18:16:18,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:16:18,515 INFO L168 Benchmark]: Toolchain (without parser) took 19222.25 ms. Allocated memory was 147.3 MB in the beginning and 344.5 MB in the end (delta: 197.1 MB). Free memory was 102.0 MB in the beginning and 291.7 MB in the end (delta: -189.7 MB). Peak memory consumption was 204.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,517 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.63 ms. Allocated memory is still 147.3 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,521 INFO L168 Benchmark]: Boogie Preprocessor took 132.36 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 180.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,529 INFO L168 Benchmark]: RCFGBuilder took 451.53 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 159.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,530 INFO L168 Benchmark]: TraceAbstraction took 18295.77 ms. Allocated memory was 203.4 MB in the beginning and 344.5 MB in the end (delta: 141.0 MB). Free memory was 159.7 MB in the beginning and 291.7 MB in the end (delta: -132.0 MB). Peak memory consumption was 206.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:16:18,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.3 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.63 ms. Allocated memory is still 147.3 MB. Free memory was 101.4 MB in the beginning and 91.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.36 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 91.0 MB in the beginning and 180.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.53 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 159.7 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18295.77 ms. Allocated memory was 203.4 MB in the beginning and 344.5 MB in the end (delta: 141.0 MB). Free memory was 159.7 MB in the beginning and 291.7 MB in the end (delta: -132.0 MB). Peak memory consumption was 206.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 17.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 257 SDtfs, 879 SDslu, 340 SDs, 0 SdLazy, 2510 SolverSat, 234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 63 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 77 PreInvPairs, 88 NumberOfFragments, 262 HoareAnnotationTreeSize, 77 FomulaSimplifications, 430 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 468 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 203 ConstructedInterpolants, 0 QuantifiedInterpolants, 40216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 21/27 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 correct! Received shutdown request...