/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=WIDEST --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/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:11:21,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:11:21,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:11:21,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:11:21,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:11:21,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:11:21,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:11:21,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:11:21,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:11:21,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:11:21,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:11:21,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:11:21,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:11:21,403 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:11:21,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:11:21,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:11:21,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:11:21,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:11:21,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:11:21,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:11:21,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:11:21,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:11:21,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:11:21,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:11:21,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:11:21,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:11:21,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:11:21,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:11:21,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:11:21,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:11:21,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:11:21,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:11:21,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:11:21,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:11:21,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:11:21,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:11:21,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:11:21,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:11:21,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:11:21,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:11:21,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:11:21,434 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:11:21,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:11:21,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:11:21,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:11:21,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:11:21,492 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:11:21,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:11:21,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:11:21,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:11:21,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:11:21,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:11:21,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:11:21,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:11:21,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:11:21,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:11:21,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:11:21,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:11:21,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:11:21,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:11:21,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:11:21,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:11:21,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:11:21,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:11:21,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:11:21,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:11:21,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:11:21,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:11:21,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:11:21,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:11:21,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:11:21,499 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:11:21,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:11:21,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:11:22,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:11:22,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:11:22,010 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:11:22,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-25 03:11:22,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3b1f46e/c5fa817a24584f9c9e0fc3c10a6e5c2c/FLAGc740c6b08 [2020-09-25 03:11:22,623 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:11:22,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-09-25 03:11:22,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3b1f46e/c5fa817a24584f9c9e0fc3c10a6e5c2c/FLAGc740c6b08 [2020-09-25 03:11:22,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec3b1f46e/c5fa817a24584f9c9e0fc3c10a6e5c2c [2020-09-25 03:11:22,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:11:23,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:11:23,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:11:23,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:11:23,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:11:23,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:11:22" (1/1) ... [2020-09-25 03:11:23,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e135c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23, skipping insertion in model container [2020-09-25 03:11:23,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:11:22" (1/1) ... [2020-09-25 03:11:23,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:11:23,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:11:23,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:11:23,257 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:11:23,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:11:23,288 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:11:23,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23 WrapperNode [2020-09-25 03:11:23,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:11:23,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:11:23,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:11:23,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:11:23,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... [2020-09-25 03:11:23,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:11:23,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:11:23,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:11:23,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:11:23,412 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:11:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:11:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:11:23,492 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 03:11:23,493 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:11:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:11:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:11:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 03:11:23,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:11:23,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:11:23,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:11:23,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:11:23,716 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:11:23,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:11:23 BoogieIcfgContainer [2020-09-25 03:11:23,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:11:23,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:11:23,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:11:23,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:11:23,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:11:22" (1/3) ... [2020-09-25 03:11:23,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2a35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:11:23, skipping insertion in model container [2020-09-25 03:11:23,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:11:23" (2/3) ... [2020-09-25 03:11:23,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b2a35d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:11:23, skipping insertion in model container [2020-09-25 03:11:23,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:11:23" (3/3) ... [2020-09-25 03:11:23,732 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-09-25 03:11:23,744 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:11:23,757 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:11:23,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:11:23,820 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:11:23,820 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:11:23,820 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:11:23,821 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:11:23,821 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:11:23,821 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:11:23,821 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:11:23,821 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:11:23,848 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 03:11:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 03:11:23,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:23,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:23,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:23,868 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-25 03:11:23,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:23,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639802316] [2020-09-25 03:11:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 03:11:24,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 03:11:24,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 03:11:24,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:11:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:24,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:24,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:11:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:24,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 03:11:24,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:24,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:11:24,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639802316] [2020-09-25 03:11:24,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:11:24,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:11:24,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500361250] [2020-09-25 03:11:24,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:11:24,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:24,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:11:24,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:11:24,250 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 03:11:24,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:24,356 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-25 03:11:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:11:24,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 03:11:24,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:24,372 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:11:24,372 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:11:24,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:11:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:11:24,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:11:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:11:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 03:11:24,432 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-25 03:11:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:24,432 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 03:11:24,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:11:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 03:11:24,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 03:11:24,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:24,435 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:24,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:11:24,436 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:24,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-25 03:11:24,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:24,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485422706] [2020-09-25 03:11:24,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:11:24,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 03:11:24,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 03:11:24,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:24,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:11:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:11:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:25,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:11:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:11:25,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:25,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-09-25 03:11:25,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:25,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:11:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 03:11:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:11:25,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485422706] [2020-09-25 03:11:25,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:11:25,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:11:25,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589511672] [2020-09-25 03:11:25,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:11:25,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:25,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:11:25,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:11:25,397 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-09-25 03:11:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:25,432 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-09-25 03:11:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:11:25,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 03:11:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:25,435 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:11:25,435 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:11:25,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:11:25,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:11:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:11:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:11:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 03:11:25,444 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 28 [2020-09-25 03:11:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:25,445 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 03:11:25,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:11:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 03:11:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 03:11:25,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:25,447 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:25,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:11:25,448 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:25,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-25 03:11:25,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:25,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685815981] [2020-09-25 03:11:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 03:11:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 03:11:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:11:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:25,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:25,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:25,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:25,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:11:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:11:25,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:25,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 03:11:25,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:11:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:25,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:25,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:25,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:25,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:11:25,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:25,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:25,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:11:25,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685815981] [2020-09-25 03:11:25,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:25,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:11:25,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431289551] [2020-09-25 03:11:25,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:11:25,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:25,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:11:25,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:11:25,868 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 8 states. [2020-09-25 03:11:25,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:25,970 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-09-25 03:11:25,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:11:25,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-25 03:11:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:25,973 INFO L225 Difference]: With dead ends: 57 [2020-09-25 03:11:25,973 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 03:11:25,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:11:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 03:11:25,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-25 03:11:25,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 03:11:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-09-25 03:11:25,982 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-09-25 03:11:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:25,982 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-09-25 03:11:25,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:11:25,983 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-09-25 03:11:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:11:25,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:25,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:25,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:11:25,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:25,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:25,985 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-09-25 03:11:25,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:25,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067637380] [2020-09-25 03:11:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:26,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:26,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 03:11:26,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:26,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 606 [2020-09-25 03:11:26,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 03:11:26,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 03:11:26,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:26,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:26,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:26,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:26,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:11:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:26,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 03:11:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:26,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 03:11:27,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:27,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 03:11:27,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:27,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:27,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 03:11:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:27,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 03:11:27,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:11:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:27,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 03:11:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:27,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:27,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:11:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:11:27,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067637380] [2020-09-25 03:11:27,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:27,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:11:27,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390843753] [2020-09-25 03:11:27,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:11:27,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:11:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:11:27,378 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 9 states. [2020-09-25 03:11:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:27,507 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-09-25 03:11:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:11:27,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-25 03:11:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:27,509 INFO L225 Difference]: With dead ends: 37 [2020-09-25 03:11:27,509 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:11:27,510 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:11:27,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:11:27,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:11:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:11:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:11:27,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-09-25 03:11:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:27,513 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:11:27,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:11:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:11:27,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:11:27,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:11:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:11:27,550 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:11:27,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:11:27,550 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:11:27,551 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:11:27,551 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:11:27,551 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:11:27,551 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-25 03:11:27,551 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-25 03:11:27,552 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-25 03:11:27,557 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 03:11:27,558 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-25 03:11:27,558 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-25 03:11:27,558 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 03:11:27,558 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 03:11:27,558 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-25 03:11:27,558 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 03:11:27,559 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 03:11:27,562 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-25 03:11:27,562 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-25 03:11:27,563 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 03:11:27,563 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 03:11:27,563 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 03:11:27,563 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 03:11:27,563 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-25 03:11:27,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:11:27 BoogieIcfgContainer [2020-09-25 03:11:27,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:11:27,577 INFO L168 Benchmark]: Toolchain (without parser) took 4574.74 ms. Allocated memory was 144.7 MB in the beginning and 246.4 MB in the end (delta: 101.7 MB). Free memory was 106.6 MB in the beginning and 212.2 MB in the end (delta: -105.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:11:27,579 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 125.3 MB in the beginning and 125.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:11:27,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.04 ms. Allocated memory is still 144.7 MB. Free memory was 106.0 MB in the beginning and 96.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:27,583 INFO L168 Benchmark]: Boogie Preprocessor took 121.00 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 96.8 MB in the beginning and 184.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:27,585 INFO L168 Benchmark]: RCFGBuilder took 311.12 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 171.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 03:11:27,591 INFO L168 Benchmark]: TraceAbstraction took 3850.60 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 171.9 MB in the beginning and 212.2 MB in the end (delta: -40.3 MB). Peak memory consumption was 552.3 kB. Max. memory is 7.1 GB. [2020-09-25 03:11:27,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 125.3 MB in the beginning and 125.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.04 ms. Allocated memory is still 144.7 MB. Free memory was 106.0 MB in the beginning and 96.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.00 ms. Allocated memory was 144.7 MB in the beginning and 205.5 MB in the end (delta: 60.8 MB). Free memory was 96.8 MB in the beginning and 184.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.12 ms. Allocated memory is still 205.5 MB. Free memory was 184.4 MB in the beginning and 171.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3850.60 ms. Allocated memory was 205.5 MB in the beginning and 246.4 MB in the end (delta: 40.9 MB). Free memory was 171.9 MB in the beginning and 212.2 MB in the end (delta: -40.3 MB). Peak memory consumption was 552.3 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 15 SDslu, 396 SDs, 0 SdLazy, 115 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=3, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 5530 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 21/26 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...