/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=LOWLEXORDER --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 [2020-09-24 21:35:13,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:35:13,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:35:13,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:35:13,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:35:14,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:35:14,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:35:14,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:35:14,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:35:14,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:35:14,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:35:14,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:35:14,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:35:14,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:35:14,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:35:14,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:35:14,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:35:14,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:35:14,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:35:14,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:35:14,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:35:14,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:35:14,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:35:14,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:35:14,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:35:14,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:35:14,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:35:14,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:35:14,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:35:14,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:35:14,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:35:14,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:35:14,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:35:14,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:35:14,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:35:14,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:35:14,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:35:14,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:35:14,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:35:14,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:35:14,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:35:14,041 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 21:35:14,069 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:35:14,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:35:14,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:35:14,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:35:14,071 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:35:14,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:35:14,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:35:14,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:35:14,072 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:35:14,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:35:14,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:35:14,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:35:14,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:35:14,073 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:35:14,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:35:14,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:35:14,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:35:14,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:35:14,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:35:14,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:35:14,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:35:14,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:35:14,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:35:14,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:35:14,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:35:14,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:35:14,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:35:14,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:35:14,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:35:14,077 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:35:14,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:35:14,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:35:14,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:35:14,583 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:35:14,583 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:35:14,584 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-09-24 21:35:14,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301c7e38f/7831cef006d64d38a9bf0ef6093b05b7/FLAGb00363e44 [2020-09-24 21:35:15,214 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:35:15,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_2x3-2.c [2020-09-24 21:35:15,224 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301c7e38f/7831cef006d64d38a9bf0ef6093b05b7/FLAGb00363e44 [2020-09-24 21:35:15,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301c7e38f/7831cef006d64d38a9bf0ef6093b05b7 [2020-09-24 21:35:15,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:35:15,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:35:15,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:35:15,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:35:15,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:35:15,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21af3704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15, skipping insertion in model container [2020-09-24 21:35:15,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:35:15,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:35:15,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:35:15,867 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:35:15,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:35:15,902 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:35:15,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15 WrapperNode [2020-09-24 21:35:15,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:35:15,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:35:15,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:35:15,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:35:15,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (1/1) ... [2020-09-24 21:35:15,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:35:15,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:35:15,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:35:15,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:35:15,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (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 21:35:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:35:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:35:16,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-09-24 21:35:16,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:35:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:35:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-09-24 21:35:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:35:16,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:35:16,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:35:16,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:35:16,306 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:35:16,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:35:16 BoogieIcfgContainer [2020-09-24 21:35:16,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:35:16,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:35:16,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:35:16,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:35:16,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:35:15" (1/3) ... [2020-09-24 21:35:16,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32016bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:35:16, skipping insertion in model container [2020-09-24 21:35:16,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:35:15" (2/3) ... [2020-09-24 21:35:16,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32016bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:35:16, skipping insertion in model container [2020-09-24 21:35:16,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:35:16" (3/3) ... [2020-09-24 21:35:16,323 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_2x3-2.c [2020-09-24 21:35:16,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:35:16,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:35:16,377 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:35:16,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:35:16,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:35:16,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:35:16,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:35:16,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:35:16,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:35:16,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:35:16,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:35:16,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-24 21:35:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 21:35:16,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:16,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:35:16,456 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:16,465 INFO L82 PathProgramCache]: Analyzing trace with hash 989240825, now seen corresponding path program 1 times [2020-09-24 21:35:16,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:16,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372804935] [2020-09-24 21:35:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:16,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:16,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:35:16,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:16,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-24 21:35:16,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:16,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:35:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:35:16,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:35:16,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:35:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:17,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:17,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:17,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:35:17,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:17,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:17,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:17,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:17,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:35:17,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 21:35:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:35:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:35:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:35:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:17,166 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 21:35:17,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372804935] [2020-09-24 21:35:17,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:35:17,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:35:17,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805728763] [2020-09-24 21:35:17,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:35:17,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:17,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:35:17,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:35:17,204 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 5 states. [2020-09-24 21:35:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:17,308 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-09-24 21:35:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:35:17,310 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-24 21:35:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:17,324 INFO L225 Difference]: With dead ends: 39 [2020-09-24 21:35:17,325 INFO L226 Difference]: Without dead ends: 25 [2020-09-24 21:35:17,330 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 [2020-09-24 21:35:17,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-24 21:35:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-09-24 21:35:17,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-09-24 21:35:17,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-09-24 21:35:17,384 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-09-24 21:35:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:17,385 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-09-24 21:35:17,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:35:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-09-24 21:35:17,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:35:17,388 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:17,388 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] [2020-09-24 21:35:17,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:35:17,389 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:17,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1852726759, now seen corresponding path program 1 times [2020-09-24 21:35:17,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:17,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141916598] [2020-09-24 21:35:17,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:17,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:35:17,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:17,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-24 21:35:17,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:35:17,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:35:17,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:35:17,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:17,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:17,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:17,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:17,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:35:17,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:17,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:17,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:17,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:17,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:17,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 21:35:17,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:17,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 21:35:17,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:17,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:35:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:35:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:35:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:17,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:35:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:18,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:18,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:18,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:35:18,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 21:35:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:18,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:35:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:35:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:35:18,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141916598] [2020-09-24 21:35:18,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:18,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:35:18,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364621828] [2020-09-24 21:35:18,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:35:18,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:35:18,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:35:18,104 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 7 states. [2020-09-24 21:35:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:18,205 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2020-09-24 21:35:18,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:35:18,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-24 21:35:18,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:18,207 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:35:18,207 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:35:18,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:35:18,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:35:18,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 21:35:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 21:35:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 21:35:18,229 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 27 [2020-09-24 21:35:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:18,230 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 21:35:18,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:35:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 21:35:18,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 21:35:18,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:18,233 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] [2020-09-24 21:35:18,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:35:18,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:18,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:18,235 INFO L82 PathProgramCache]: Analyzing trace with hash -175020829, now seen corresponding path program 2 times [2020-09-24 21:35:18,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:18,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487623762] [2020-09-24 21:35:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:18,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 21:35:19,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-09-24 21:35:19,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:35:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:35:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:19,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:19,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:19,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:35:19,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:19,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:35:19,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:35:19,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 21:35:19,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:35:19,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:19,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:35:19,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:19,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:35:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-24 21:35:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 21:35:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:35:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:35:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:35:20,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:35:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:20,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:20,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:20,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:35:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 21:35:20,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:20,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:35:20,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 21:35:20,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487623762] [2020-09-24 21:35:20,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:35:20,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:35:20,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217981362] [2020-09-24 21:35:20,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:35:20,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:20,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:35:20,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:35:20,066 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2020-09-24 21:35:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:20,380 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-09-24 21:35:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:35:20,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-09-24 21:35:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:20,381 INFO L225 Difference]: With dead ends: 30 [2020-09-24 21:35:20,381 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:35:20,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:35:20,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:35:20,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:35:20,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:35:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:35:20,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2020-09-24 21:35:20,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:20,386 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:35:20,386 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:35:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:35:20,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:35:20,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:35:20,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:35:20,489 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 21:35:20,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:35:20,489 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:35:20,490 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:35:20,490 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:35:20,490 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:35:20,490 INFO L268 CegarLoopResult]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2020-09-24 21:35:20,490 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (let ((.cse1 (+ |sum_#in~n| |sum_#in~m|)) (.cse0 (+ sum_~n sum_~m))) (and (<= |sum_#in~n| sum_~n) (<= .cse0 .cse1) (<= sum_~n |sum_#in~n|) (<= .cse1 .cse0))) [2020-09-24 21:35:20,490 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point L7-2(line 7) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point L4(lines 4 8) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point L7-3(line 7) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point L3(lines 3 9) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L268 CegarLoopResult]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2020-09-24 21:35:20,491 INFO L271 CegarLoopResult]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2020-09-24 21:35:20,492 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-24 21:35:20,492 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-09-24 21:35:20,492 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2020-09-24 21:35:20,492 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:35:20,492 INFO L268 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-09-24 21:35:20,493 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~a~0 2) [2020-09-24 21:35:20,493 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 21:35:20,493 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 21:35:20,493 INFO L268 CegarLoopResult]: For program point L15-2(lines 11 18) no Hoare annotation was computed. [2020-09-24 21:35:20,493 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 21:35:20,493 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-24 21:35:20,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:35:20 BoogieIcfgContainer [2020-09-24 21:35:20,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:35:20,511 INFO L168 Benchmark]: Toolchain (without parser) took 4975.22 ms. Allocated memory was 148.4 MB in the beginning and 243.3 MB in the end (delta: 94.9 MB). Free memory was 104.8 MB in the beginning and 139.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 60.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:35:20,512 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 21:35:20,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.43 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-24 21:35:20,514 INFO L168 Benchmark]: Boogie Preprocessor took 30.68 ms. Allocated memory is still 148.4 MB. Free memory was 95.0 MB in the beginning and 93.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-24 21:35:20,517 INFO L168 Benchmark]: RCFGBuilder took 377.35 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 93.7 MB in the beginning and 170.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:35:20,524 INFO L168 Benchmark]: TraceAbstraction took 4191.18 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 170.9 MB in the beginning and 139.4 MB in the end (delta: 31.5 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-09-24 21:35:20,536 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 366.43 ms. Allocated memory is still 148.4 MB. Free memory was 104.2 MB in the beginning and 95.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.68 ms. Allocated memory is still 148.4 MB. Free memory was 95.0 MB in the beginning and 93.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 377.35 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 93.7 MB in the beginning and 170.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4191.18 ms. Allocated memory was 203.4 MB in the beginning and 243.3 MB in the end (delta: 39.8 MB). Free memory was 170.9 MB in the beginning and 139.4 MB in the end (delta: 31.5 MB). Peak memory consumption was 71.4 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: 3.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 51 SDslu, 150 SDs, 0 SdLazy, 122 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s 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, 29 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 12798 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...