/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/McCarthy91-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 12:55:44,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 12:55:44,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 12:55:44,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 12:55:44,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 12:55:44,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 12:55:44,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 12:55:44,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 12:55:44,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 12:55:44,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 12:55:44,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 12:55:44,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 12:55:44,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 12:55:44,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 12:55:44,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 12:55:44,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 12:55:44,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 12:55:44,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 12:55:44,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 12:55:44,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 12:55:44,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 12:55:44,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 12:55:44,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 12:55:44,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 12:55:44,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 12:55:44,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 12:55:44,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 12:55:44,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 12:55:44,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 12:55:44,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 12:55:44,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 12:55:44,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 12:55:44,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 12:55:44,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 12:55:44,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 12:55:44,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 12:55:44,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 12:55:44,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 12:55:44,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 12:55:44,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 12:55:44,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 12:55:44,524 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 [2020-10-13 12:55:44,549 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 12:55:44,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 12:55:44,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 12:55:44,551 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 12:55:44,552 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 12:55:44,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 12:55:44,552 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 12:55:44,552 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 12:55:44,552 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 12:55:44,552 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 12:55:44,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 12:55:44,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 12:55:44,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 12:55:44,555 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 12:55:44,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 12:55:44,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 12:55:44,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 12:55:44,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 12:55:44,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 12:55:44,556 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 12:55:44,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 12:55:44,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 12:55:44,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 12:55:44,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 12:55:44,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 12:55:44,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 12:55:44,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 12:55:44,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 12:55:44,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 12:55:44,559 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 12:55:44,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 12:55:44,862 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 12:55:44,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 12:55:44,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 12:55:44,867 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 12:55:44,868 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-10-13 12:55:44,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f2a46d0/e47c1a60622c4c3ea5c57f9faef94112/FLAG26e5b13e3 [2020-10-13 12:55:45,366 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 12:55:45,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-10-13 12:55:45,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f2a46d0/e47c1a60622c4c3ea5c57f9faef94112/FLAG26e5b13e3 [2020-10-13 12:55:45,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0f2a46d0/e47c1a60622c4c3ea5c57f9faef94112 [2020-10-13 12:55:45,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 12:55:45,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 12:55:45,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 12:55:45,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 12:55:45,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 12:55:45,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:55:45" (1/1) ... [2020-10-13 12:55:45,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcb5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:45, skipping insertion in model container [2020-10-13 12:55:45,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:55:45" (1/1) ... [2020-10-13 12:55:45,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 12:55:45,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 12:55:46,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:55:46,024 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 12:55:46,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 12:55:46,050 INFO L208 MainTranslator]: Completed translation [2020-10-13 12:55:46,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46 WrapperNode [2020-10-13 12:55:46,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 12:55:46,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 12:55:46,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 12:55:46,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 12:55:46,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (1/1) ... [2020-10-13 12:55:46,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 12:55:46,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 12:55:46,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 12:55:46,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 12:55:46,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (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 [2020-10-13 12:55:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 12:55:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 12:55:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-10-13 12:55:46,234 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 12:55:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 12:55:46,402 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 12:55:46,403 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 12:55:46,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:55:46 BoogieIcfgContainer [2020-10-13 12:55:46,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 12:55:46,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 12:55:46,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 12:55:46,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 12:55:46,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:55:45" (1/3) ... [2020-10-13 12:55:46,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c36f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:55:46, skipping insertion in model container [2020-10-13 12:55:46,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:55:46" (2/3) ... [2020-10-13 12:55:46,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4c36f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:55:46, skipping insertion in model container [2020-10-13 12:55:46,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:55:46" (3/3) ... [2020-10-13 12:55:46,415 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-10-13 12:55:46,425 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 12:55:46,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 12:55:46,445 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 12:55:46,468 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 12:55:46,469 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 12:55:46,469 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 12:55:46,469 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 12:55:46,469 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 12:55:46,469 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 12:55:46,469 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 12:55:46,470 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 12:55:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-13 12:55:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 12:55:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:55:46,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:55:46,495 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:55:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:55:46,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1590359645, now seen corresponding path program 1 times [2020-10-13 12:55:46,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:55:46,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135140243] [2020-10-13 12:55:46,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:55:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:46,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 12:55:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 12:55:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:46,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 12:55:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 12:55:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 12:55:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 12:55:46,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:55:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:46,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:46,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:55:46,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:46,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 12:55:46,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:55:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:55:46,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:55:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 12:55:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:46,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:47,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:47,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:55:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-13 12:55:47,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 12:55:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:47,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 12:55:47,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 12:55:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 12:55:47,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135140243] [2020-10-13 12:55:47,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 12:55:47,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 12:55:47,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105143605] [2020-10-13 12:55:47,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 12:55:47,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:55:47,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 12:55:47,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 12:55:47,167 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2020-10-13 12:55:47,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:55:47,303 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-13 12:55:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 12:55:47,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-13 12:55:47,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:55:47,315 INFO L225 Difference]: With dead ends: 34 [2020-10-13 12:55:47,316 INFO L226 Difference]: Without dead ends: 20 [2020-10-13 12:55:47,319 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 [2020-10-13 12:55:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-13 12:55:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-13 12:55:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-13 12:55:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-13 12:55:47,361 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-10-13 12:55:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:55:47,362 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-13 12:55:47,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 12:55:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-13 12:55:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 12:55:47,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 12:55:47,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 12:55:47,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 12:55:47,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 12:55:47,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 12:55:47,366 INFO L82 PathProgramCache]: Analyzing trace with hash 2121223720, now seen corresponding path program 1 times [2020-10-13 12:55:47,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 12:55:47,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918788353] [2020-10-13 12:55:47,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 12:55:47,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:47,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:47,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 12:55:47,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:47,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 311 [2020-10-13 12:55:47,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 12:55:47,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 12:55:47,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 12:55:47,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:55:47,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 12:55:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:47,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:47,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:47,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-13 12:55:47,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 12:55:47,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 12:55:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:47,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 12:55:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:55:47,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 12:55:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:47,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:47,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:47,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 12:55:47,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:47,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-13 12:55:47,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:47,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 12:55:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:47,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 12:55:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 12:55:47,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 12:55:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:47,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:48,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:48,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:55:48,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:48,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 12:55:48,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 12:55:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:48,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 12:55:48,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:55:48,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 12:55:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 12:55:48,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 12:55:48,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 12:55:48,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 12:55:48,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 12:55:48,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 12:55:48,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 12:55:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 12:55:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 12:55:48,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 12:55:48,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 12:55:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 12:55:48,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918788353] [2020-10-13 12:55:48,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 12:55:48,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 12:55:48,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520049701] [2020-10-13 12:55:48,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 12:55:48,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 12:55:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 12:55:48,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 12:55:48,126 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 11 states. [2020-10-13 12:55:48,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 12:55:48,328 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-10-13 12:55:48,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 12:55:48,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-10-13 12:55:48,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 12:55:48,330 INFO L225 Difference]: With dead ends: 20 [2020-10-13 12:55:48,330 INFO L226 Difference]: Without dead ends: 0 [2020-10-13 12:55:48,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-13 12:55:48,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-13 12:55:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-13 12:55:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-13 12:55:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-13 12:55:48,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-10-13 12:55:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 12:55:48,334 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-13 12:55:48,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 12:55:48,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-13 12:55:48,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-13 12:55:48,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 12:55:48,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-13 12:55:48,388 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-13 12:55:48,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-13 12:55:48,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-13 12:55:48,389 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-13 12:55:48,389 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-13 12:55:48,389 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-13 12:55:48,389 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2020-10-13 12:55:48,390 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-10-13 12:55:48,390 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2020-10-13 12:55:48,390 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-10-13 12:55:48,390 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-10-13 12:55:48,390 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-13 12:55:48,390 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-10-13 12:55:48,390 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-10-13 12:55:48,391 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (<= |f91_#in~x| f91_~x) (<= f91_~x 100) (<= f91_~x |f91_#in~x|) (<= |f91_#t~ret0| 101)) [2020-10-13 12:55:48,391 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-10-13 12:55:48,391 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-10-13 12:55:48,391 INFO L271 CegarLoopResult]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2020-10-13 12:55:48,391 INFO L268 CegarLoopResult]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2020-10-13 12:55:48,392 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (<= |f91_#in~x| f91_~x) (<= f91_~x 100) (<= f91_~x |f91_#in~x|)) [2020-10-13 12:55:48,392 INFO L268 CegarLoopResult]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2020-10-13 12:55:48,392 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-13 12:55:48,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:55:48 BoogieIcfgContainer [2020-10-13 12:55:48,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 12:55:48,401 INFO L168 Benchmark]: Toolchain (without parser) took 2603.86 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 103.4 MB in the beginning and 144.6 MB in the end (delta: -41.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,402 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.53 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,404 INFO L168 Benchmark]: Boogie Preprocessor took 107.27 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,405 INFO L168 Benchmark]: RCFGBuilder took 247.41 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 169.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,406 INFO L168 Benchmark]: TraceAbstraction took 1990.58 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 169.2 MB in the beginning and 144.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2020-10-13 12:55:48,412 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.53 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.27 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 93.9 MB in the beginning and 181.6 MB in the end (delta: -87.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.41 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 169.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1990.58 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 169.2 MB in the beginning and 144.6 MB in the end (delta: 24.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 15 SDslu, 110 SDs, 0 SdLazy, 130 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 29 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 8/12 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...