/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 --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 interpolation-heuristic=FIRST --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/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:19:23,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:19:23,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:19:23,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:19:23,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:19:23,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:19:23,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:19:23,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:19:23,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:19:23,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:19:23,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:19:23,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:19:23,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:19:23,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:19:23,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:19:23,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:19:23,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:19:23,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:19:23,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:19:23,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:19:23,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:19:23,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:19:23,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:19:23,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:19:23,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:19:23,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:19:23,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:19:23,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:19:23,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:19:23,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:19:23,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:19:23,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:19:23,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:19:23,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:19:23,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:19:23,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:19:23,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:19:23,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:19:23,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:19:23,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:19:23,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:19:23,921 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 [2020-09-21 11:19:23,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:19:23,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:19:23,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:19:23,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:19:23,966 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:19:23,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:19:23,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:19:23,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:19:23,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:19:23,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:19:23,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:19:23,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:19:23,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:19:23,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:19:23,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:19:23,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:19:23,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:19:23,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:19:23,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:19:23,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:19:23,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:19:23,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:19:23,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:19:23,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:19:23,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:19:23,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:19:23,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:19:23,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:19:23,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:19:23,976 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.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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:19:24,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:19:24,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:19:24,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:19:24,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:19:24,463 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:19:24,464 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-21 11:19:24,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5f5a3d5/a888d5609e8b46df810eb7f59cf58e4d/FLAG13dce3a6a [2020-09-21 11:19:25,090 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:19:25,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-21 11:19:25,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5f5a3d5/a888d5609e8b46df810eb7f59cf58e4d/FLAG13dce3a6a [2020-09-21 11:19:25,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bc5f5a3d5/a888d5609e8b46df810eb7f59cf58e4d [2020-09-21 11:19:25,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:19:25,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:19:25,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:25,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:19:25,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:19:25,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25, skipping insertion in model container [2020-09-21 11:19:25,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:19:25,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:19:25,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:25,727 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:19:25,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:19:25,767 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:19:25,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25 WrapperNode [2020-09-21 11:19:25,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:19:25,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:19:25,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:19:25,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:19:25,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (1/1) ... [2020-09-21 11:19:25,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:19:25,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:19:25,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:19:25,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:19:25,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (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 [2020-09-21 11:19:25,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:19:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:19:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-21 11:19:25,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:19:25,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:19:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:19:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-21 11:19:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:19:25,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:19:25,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:19:26,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:19:26,201 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:19:26,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:26 BoogieIcfgContainer [2020-09-21 11:19:26,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:19:26,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:19:26,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:19:26,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:19:26,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:19:25" (1/3) ... [2020-09-21 11:19:26,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baf05e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:26, skipping insertion in model container [2020-09-21 11:19:26,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:19:25" (2/3) ... [2020-09-21 11:19:26,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baf05e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:19:26, skipping insertion in model container [2020-09-21 11:19:26,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:19:26" (3/3) ... [2020-09-21 11:19:26,216 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-09-21 11:19:26,229 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:19:26,242 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:19:26,268 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:19:26,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:19:26,308 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:19:26,308 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:19:26,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:19:26,309 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:19:26,309 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:19:26,309 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:19:26,309 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:19:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-21 11:19:26,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 11:19:26,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:26,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:26,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:26,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:26,358 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2020-09-21 11:19:26,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:26,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192661864] [2020-09-21 11:19:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,567 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:26,567 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-21 11:19:26,568 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-21 11:19:26,568 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:19:26,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 11:19:26,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:26,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:26,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:26,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,689 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,690 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,690 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:26,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:19:26,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:26,741 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:26,741 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:26,741 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:26,747 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:26,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:26,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:26,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 11:19:26,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:26,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:26,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192661864] [2020-09-21 11:19:26,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:26,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:19:26,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074893388] [2020-09-21 11:19:26,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:26,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:26,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:26,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:26,863 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-09-21 11:19:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:27,067 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-09-21 11:19:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:27,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-21 11:19:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:27,083 INFO L225 Difference]: With dead ends: 38 [2020-09-21 11:19:27,083 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 11:19:27,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 11:19:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-21 11:19:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 11:19:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2020-09-21 11:19:27,145 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2020-09-21 11:19:27,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:27,146 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2020-09-21 11:19:27,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:27,147 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2020-09-21 11:19:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:19:27,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:27,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:27,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:19:27,150 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:27,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:27,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2020-09-21 11:19:27,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:27,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237015207] [2020-09-21 11:19:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,181 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:27,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -1 [2020-09-21 11:19:27,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 1 [2020-09-21 11:19:27,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:19:27,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:19:27,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:19:27,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,212 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,212 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,212 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,213 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:27,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:27,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:27,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:27,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,253 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,253 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,253 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,253 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:19:27,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:19:27,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:19:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:19:27,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:19:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:19:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:19:27,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237015207] [2020-09-21 11:19:27,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:19:27,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:19:27,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885266105] [2020-09-21 11:19:27,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:19:27,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:27,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:19:27,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:19:27,354 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 6 states. [2020-09-21 11:19:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:27,476 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2020-09-21 11:19:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:19:27,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-21 11:19:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:27,479 INFO L225 Difference]: With dead ends: 31 [2020-09-21 11:19:27,479 INFO L226 Difference]: Without dead ends: 21 [2020-09-21 11:19:27,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:19:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-21 11:19:27,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-21 11:19:27,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 11:19:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-09-21 11:19:27,488 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2020-09-21 11:19:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:27,488 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-09-21 11:19:27,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:19:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-09-21 11:19:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:19:27,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:19:27,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:19:27,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:19:27,491 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:19:27,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:19:27,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2020-09-21 11:19:27,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:19:27,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609121734] [2020-09-21 11:19:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:19:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,604 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:19:27,606 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,606 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,607 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:19:27,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 11:19:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:19:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:19:27,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 11:19:27,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:19:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,692 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:19:27,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:19:27,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:19:27,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 11:19:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,799 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,800 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,800 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,800 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 11:19:27,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-21 11:19:27,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:19:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:19:27,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:19:27,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:19:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:19:27,933 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:19:27,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:19:27,935 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:19:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:19:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:19:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:19:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:19:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:19:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:19:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:19:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:19:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:19:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:19:28,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609121734] [2020-09-21 11:19:28,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:19:28,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:19:28,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145168908] [2020-09-21 11:19:28,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:19:28,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:19:28,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:19:28,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:19:28,032 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2020-09-21 11:19:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:19:28,178 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-09-21 11:19:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:19:28,179 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-09-21 11:19:28,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:19:28,180 INFO L225 Difference]: With dead ends: 21 [2020-09-21 11:19:28,180 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:19:28,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:19:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:19:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:19:28,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:19:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:19:28,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-09-21 11:19:28,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:19:28,182 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:19:28,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:19:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:19:28,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:19:28,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:19:28,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:19:28,280 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:19:28,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:19:28,280 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:19:28,280 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:19:28,280 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:19:28,281 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:19:28,281 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-09-21 11:19:28,281 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-09-21 11:19:28,281 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-21 11:19:28,281 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-09-21 11:19:28,282 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-09-21 11:19:28,282 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-21 11:19:28,282 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-09-21 11:19:28,282 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-09-21 11:19:28,282 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-21 11:19:28,283 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-09-21 11:19:28,283 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-21 11:19:28,283 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= addition_~n |addition_#in~n|) (<= (+ |addition_#in~n| 1) 0) (<= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-09-21 11:19:28,283 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-21 11:19:28,283 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-21 11:19:28,284 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= |addition_#in~n| addition_~n) (<= (+ addition_~m addition_~n) (+ |addition_#in~n| |addition_#in~m|)) (= |addition_#in~m| addition_~m) (not (= addition_~n 0))) [2020-09-21 11:19:28,284 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-09-21 11:19:28,284 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-21 11:19:28,284 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-09-21 11:19:28,284 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-21 11:19:28,284 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-21 11:19:28,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:19:28 BoogieIcfgContainer [2020-09-21 11:19:28,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:19:28,296 INFO L168 Benchmark]: Toolchain (without parser) took 2840.89 ms. Allocated memory was 148.4 MB in the beginning and 233.8 MB in the end (delta: 85.5 MB). Free memory was 104.6 MB in the beginning and 145.1 MB in the end (delta: -40.5 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:28,297 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:19:28,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.52 ms. Allocated memory is still 148.4 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:28,299 INFO L168 Benchmark]: Boogie Preprocessor took 36.81 ms. Allocated memory is still 148.4 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:28,300 INFO L168 Benchmark]: RCFGBuilder took 399.88 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 171.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:28,301 INFO L168 Benchmark]: TraceAbstraction took 2084.11 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 170.6 MB in the beginning and 145.1 MB in the end (delta: 25.5 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-09-21 11:19:28,305 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.52 ms. Allocated memory is still 148.4 MB. Free memory was 103.9 MB in the beginning and 94.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.81 ms. Allocated memory is still 148.4 MB. Free memory was 94.5 MB in the beginning and 93.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.88 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.1 MB in the beginning and 171.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2084.11 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 170.6 MB in the beginning and 145.1 MB in the end (delta: 25.5 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 40 SDslu, 140 SDs, 0 SdLazy, 170 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 41 HoareAnnotationTreeSize, 14 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 4834 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 2/4 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...