/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:32:54,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:32:54,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:32:54,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:32:54,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:32:54,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:32:54,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:32:54,504 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:32:54,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:32:54,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:32:54,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:32:54,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:32:54,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:32:54,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:32:54,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:32:54,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:32:54,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:32:54,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:32:54,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:32:54,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:32:54,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:32:54,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:32:54,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:32:54,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:32:54,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:32:54,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:32:54,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:32:54,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:32:54,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:32:54,559 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:32:54,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:32:54,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:32:54,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:32:54,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:32:54,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:32:54,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:32:54,568 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:32:54,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:32:54,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:32:54,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:32:54,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:32:54,572 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 14:32:54,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:32:54,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:32:54,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:32:54,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:32:54,620 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:32:54,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:32:54,620 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:32:54,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:32:54,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:32:54,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:32:54,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:32:54,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:32:54,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:32:54,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:32:54,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:32:54,623 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:32:54,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:32:54,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:32:54,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:32:54,624 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:32:54,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:32:54,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:32:54,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:32:54,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:32:54,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:32:54,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:32:54,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:32:54,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:32:54,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:32:54,626 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:32:55,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:32:55,090 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:32:55,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:32:55,099 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:32:55,100 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:32:55,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-09-25 14:32:55,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44059b456/dd9155e1fab44e4eb6f0077589c02e11/FLAG4792d36f2 [2020-09-25 14:32:55,668 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:32:55,669 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-09-25 14:32:55,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44059b456/dd9155e1fab44e4eb6f0077589c02e11/FLAG4792d36f2 [2020-09-25 14:32:56,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44059b456/dd9155e1fab44e4eb6f0077589c02e11 [2020-09-25 14:32:56,036 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:32:56,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:32:56,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:32:56,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:32:56,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:32:56,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f80c8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56, skipping insertion in model container [2020-09-25 14:32:56,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:32:56,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:32:56,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:32:56,376 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:32:56,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:32:56,420 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:32:56,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56 WrapperNode [2020-09-25 14:32:56,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:32:56,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:32:56,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:32:56,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:32:56,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (1/1) ... [2020-09-25 14:32:56,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:32:56,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:32:56,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:32:56,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:32:56,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (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 14:32:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:32:56,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:32:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-25 14:32:56,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:32:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:32:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-25 14:32:56,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:32:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:32:56,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:32:56,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:32:56,821 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:32:56,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:32:56 BoogieIcfgContainer [2020-09-25 14:32:56,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:32:56,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:32:56,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:32:56,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:32:56,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:32:56" (1/3) ... [2020-09-25 14:32:56,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1622cde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:32:56, skipping insertion in model container [2020-09-25 14:32:56,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:32:56" (2/3) ... [2020-09-25 14:32:56,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1622cde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:32:56, skipping insertion in model container [2020-09-25 14:32:56,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:32:56" (3/3) ... [2020-09-25 14:32:56,837 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2020-09-25 14:32:56,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:32:56,861 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:32:56,891 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:32:56,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:32:56,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:32:56,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:32:56,930 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:32:56,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:32:56,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:32:56,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:32:56,931 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:32:56,959 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 14:32:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 14:32:56,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:56,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:56,969 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:56,979 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-25 14:32:56,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:56,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648097673] [2020-09-25 14:32:56,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:32:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-09-25 14:32:57,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:32:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:57,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:57,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:32:57,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:57,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:57,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:32:57,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:57,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:57,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:57,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:32:57,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:57,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:32:57,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:57,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:32:57,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:57,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:32:57,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:57,616 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 14:32:57,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648097673] [2020-09-25 14:32:57,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:32:57,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:32:57,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089307826] [2020-09-25 14:32:57,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:32:57,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:57,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:32:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:32:57,649 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-25 14:32:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:57,749 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-25 14:32:57,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:32:57,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 14:32:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:57,766 INFO L225 Difference]: With dead ends: 39 [2020-09-25 14:32:57,766 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 14:32:57,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:32:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 14:32:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-25 14:32:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-25 14:32:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-25 14:32:57,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-25 14:32:57,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:57,840 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-25 14:32:57,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:32:57,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-25 14:32:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 14:32:57,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:57,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:57,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:32:57,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:57,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-25 14:32:57,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:57,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626632985] [2020-09-25 14:32:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:57,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:58,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:58,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:32:58,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:58,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-25 14:32:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:58,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:32:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:32:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:32:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:32:58,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:58,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:58,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:58,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:32:58,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:58,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:58,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:58,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:58,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 14:32:58,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:58,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:58,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:32:58,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:32:58,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:58,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:32:58,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:32:58,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:32:58,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:32:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:58,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:32:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 14:32:58,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:58,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:32:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:32:58,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:32:58,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626632985] [2020-09-25 14:32:58,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:32:58,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:32:58,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093958521] [2020-09-25 14:32:58,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:32:58,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:32:58,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:32:58,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:32:58,592 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 6 states. [2020-09-25 14:32:58,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:32:58,671 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-25 14:32:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:32:58,671 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-25 14:32:58,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:32:58,673 INFO L225 Difference]: With dead ends: 36 [2020-09-25 14:32:58,673 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 14:32:58,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:32:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 14:32:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 14:32:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 14:32:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 14:32:58,690 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-25 14:32:58,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:32:58,691 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 14:32:58,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:32:58,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 14:32:58,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 14:32:58,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:32:58,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:32:58,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:32:58,695 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:32:58,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:32:58,696 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-25 14:32:58,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:32:58,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698893084] [2020-09-25 14:32:58,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:32:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:58,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:59,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:59,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 14:32:59,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:32:59,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-25 14:32:59,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:59,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 14:32:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:32:59,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:32:59,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:59,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:32:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:59,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:59,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:59,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:32:59,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:59,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:32:59,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:32:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:32:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:32:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 14:32:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:32:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:32:59,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:32:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 14:32:59,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:32:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 14:32:59,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:32:59,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:32:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 14:32:59,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:32:59,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:32:59,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:00,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:33:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:00,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:00,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:00,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 14:33:00,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:00,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:00,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:33:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:00,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:33:00,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:00,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:33:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:00,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:00,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:33:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:33:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:00,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:33:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:00,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:33:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:33:00,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698893084] [2020-09-25 14:33:00,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:00,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:33:00,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664967340] [2020-09-25 14:33:00,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:33:00,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:00,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:33:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:00,235 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2020-09-25 14:33:00,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:00,395 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-09-25 14:33:00,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 14:33:00,396 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-09-25 14:33:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:00,397 INFO L225 Difference]: With dead ends: 30 [2020-09-25 14:33:00,397 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:33:00,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:33:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:33:00,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:33:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:33:00,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:33:00,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-25 14:33:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:00,399 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:33:00,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:33:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:33:00,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:33:00,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:00,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:33:00,458 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:33:00,458 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:33:00,458 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:33:00,458 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:33:00,458 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:33:00,459 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:33:00,459 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2020-09-25 14:33:00,459 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (<= |sum_#in~n| sum_~n) (= sum_~m |sum_#in~m|) (<= sum_~n |sum_#in~n|)) [2020-09-25 14:33:00,459 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-25 14:33:00,459 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 14:33:00,459 INFO L268 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed. [2020-09-25 14:33:00,460 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2020-09-25 14:33:00,460 INFO L268 CegarLoopResult]: For program point L7-3(line 7) no Hoare annotation was computed. [2020-09-25 14:33:00,460 INFO L268 CegarLoopResult]: For program point L3(lines 3 9) no Hoare annotation was computed. [2020-09-25 14:33:00,460 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2020-09-25 14:33:00,460 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-09-25 14:33:00,461 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-25 14:33:00,461 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-09-25 14:33:00,461 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-09-25 14:33:00,461 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 14:33:00,461 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-09-25 14:33:00,461 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~a~0 2) [2020-09-25 14:33:00,462 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 14:33:00,462 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 14:33:00,462 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2020-09-25 14:33:00,462 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 14:33:00,462 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 14:33:00,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:33:00 BoogieIcfgContainer [2020-09-25 14:33:00,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:33:00,474 INFO L168 Benchmark]: Toolchain (without parser) took 4434.22 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 103.4 MB in the beginning and 170.3 MB in the end (delta: -66.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:00,475 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:33:00,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.78 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:00,477 INFO L168 Benchmark]: Boogie Preprocessor took 109.10 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 182.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:00,478 INFO L168 Benchmark]: RCFGBuilder took 294.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 169.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:00,479 INFO L168 Benchmark]: TraceAbstraction took 3642.10 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 169.7 MB in the beginning and 170.3 MB in the end (delta: -546.8 kB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-09-25 14:33:00,483 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.78 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.10 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 182.6 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.35 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 169.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3642.10 ms. Allocated memory was 203.4 MB in the beginning and 245.9 MB in the end (delta: 42.5 MB). Free memory was 169.7 MB in the beginning and 170.3 MB in the end (delta: -546.8 kB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 124 SDs, 0 SdLazy, 106 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 18 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 11328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 22/24 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...