/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=DEEPEST --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 language data_model -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:19:35,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:19:35,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:19:35,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:19:35,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:19:35,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:19:35,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:19:35,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:19:35,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:19:35,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:19:35,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:19:35,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:19:35,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:19:35,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:19:35,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:19:35,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:19:35,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:19:35,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:19:35,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:19:35,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:19:35,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:19:35,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:19:35,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:19:35,417 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:19:35,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:19:35,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:19:35,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:19:35,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:19:35,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:19:35,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:19:35,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:19:35,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:19:35,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:19:35,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:19:35,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:19:35,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:19:35,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:19:35,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:19:35,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:19:35,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:19:35,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:19:35,432 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 [2020-10-27 20:19:35,461 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:19:35,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:19:35,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:19:35,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:19:35,463 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:19:35,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:19:35,464 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:19:35,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:19:35,464 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:19:35,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:19:35,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:19:35,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:19:35,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:19:35,466 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:19:35,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:19:35,466 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:19:35,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:19:35,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:19:35,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:19:35,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:19:35,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:19:35,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:19:35,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:19:35,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:19:35,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:19:35,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:19:35,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:19:35,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:19:35,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:19:35,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:19:35,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:19:35,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:19:35,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:19:35,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:19:35,864 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:19:35,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-27 20:19:35,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db5353e5b/37c0b178584749f097c351729c6b2bad/FLAG8b57f7d66 [2020-10-27 20:19:36,629 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:19:36,630 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gj2007b.i [2020-10-27 20:19:36,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db5353e5b/37c0b178584749f097c351729c6b2bad/FLAG8b57f7d66 [2020-10-27 20:19:37,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db5353e5b/37c0b178584749f097c351729c6b2bad [2020-10-27 20:19:37,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:19:37,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:19:37,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:19:37,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:19:37,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:19:37,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc40e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37, skipping insertion in model container [2020-10-27 20:19:37,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:19:37,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:19:37,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:19:37,283 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:19:37,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:19:37,319 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:19:37,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37 WrapperNode [2020-10-27 20:19:37,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:19:37,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:19:37,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:19:37,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:19:37,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (1/1) ... [2020-10-27 20:19:37,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:19:37,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:19:37,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:19:37,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:19:37,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (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 [2020-10-27 20:19:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:19:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:19:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:19:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:19:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:19:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:19:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:19:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:19:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:19:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:19:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:19:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:19:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:19:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:19:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:19:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:19:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:19:37,722 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:19:37,722 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:19:37,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:37 BoogieIcfgContainer [2020-10-27 20:19:37,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:19:37,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:19:37,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:19:37,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:19:37,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:19:37" (1/3) ... [2020-10-27 20:19:37,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7cb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:37, skipping insertion in model container [2020-10-27 20:19:37,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:19:37" (2/3) ... [2020-10-27 20:19:37,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7cb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:19:37, skipping insertion in model container [2020-10-27 20:19:37,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:19:37" (3/3) ... [2020-10-27 20:19:37,740 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2020-10-27 20:19:37,765 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:19:37,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:19:37,804 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:19:37,840 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:19:37,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:19:37,841 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:19:37,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:19:37,841 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:19:37,841 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:19:37,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:19:37,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:19:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-27 20:19:37,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:19:37,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:37,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:37,894 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:37,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1946050314, now seen corresponding path program 1 times [2020-10-27 20:19:37,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:37,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896126461] [2020-10-27 20:19:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:38,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:38,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:38,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:38,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:19:38,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:19:38,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-27 20:19:38,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:19:38,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:38,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:19:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:38,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:38,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:38,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:38,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:19:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:38,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:38,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896126461] [2020-10-27 20:19:38,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:38,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:19:38,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903988020] [2020-10-27 20:19:38,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:19:38,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:38,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:19:38,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:19:38,623 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states. [2020-10-27 20:19:38,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:38,706 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2020-10-27 20:19:38,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:19:38,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-27 20:19:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:38,717 INFO L225 Difference]: With dead ends: 42 [2020-10-27 20:19:38,717 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 20:19:38,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:19:38,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 20:19:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-27 20:19:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-27 20:19:38,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-10-27 20:19:38,762 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2020-10-27 20:19:38,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:38,763 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-10-27 20:19:38,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:19:38,763 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-10-27 20:19:38,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:19:38,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:38,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:38,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:19:38,765 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:38,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1176311083, now seen corresponding path program 1 times [2020-10-27 20:19:38,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:38,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214358444] [2020-10-27 20:19:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:38,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 20:19:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:38,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 20:19:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:19:38,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:19:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:38,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:38,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:38,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:19:38,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:38,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:38,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214358444] [2020-10-27 20:19:38,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:38,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:38,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459192853] [2020-10-27 20:19:38,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:38,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:38,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:38,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:38,997 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2020-10-27 20:19:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:39,294 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-10-27 20:19:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 20:19:39,295 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-27 20:19:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:39,296 INFO L225 Difference]: With dead ends: 32 [2020-10-27 20:19:39,297 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 20:19:39,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 20:19:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 20:19:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-27 20:19:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-27 20:19:39,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-27 20:19:39,310 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 13 [2020-10-27 20:19:39,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:39,310 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-27 20:19:39,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-27 20:19:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 20:19:39,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:39,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:39,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:19:39,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:39,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1733037939, now seen corresponding path program 1 times [2020-10-27 20:19:39,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:39,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386322311] [2020-10-27 20:19:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:39,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 20:19:39,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:19:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-27 20:19:39,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:19:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:19:39,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:19:39,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:39,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:39,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:39,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:39,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:39,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:19:39,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:39,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:39,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:39,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:39,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386322311] [2020-10-27 20:19:39,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:39,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 20:19:39,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201213305] [2020-10-27 20:19:39,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:19:39,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:39,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:19:39,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:39,840 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 8 states. [2020-10-27 20:19:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:40,461 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-27 20:19:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:19:40,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-27 20:19:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:40,465 INFO L225 Difference]: With dead ends: 54 [2020-10-27 20:19:40,466 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 20:19:40,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:19:40,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 20:19:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 29. [2020-10-27 20:19:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 20:19:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-27 20:19:40,478 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 16 [2020-10-27 20:19:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:40,479 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-27 20:19:40,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:19:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-27 20:19:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 20:19:40,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:40,480 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:40,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:19:40,481 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:40,481 INFO L82 PathProgramCache]: Analyzing trace with hash -387339774, now seen corresponding path program 1 times [2020-10-27 20:19:40,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:40,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847439336] [2020-10-27 20:19:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:40,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:40,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:40,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 20:19:40,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:40,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 20:19:40,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:19:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:19:40,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 20:19:40,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:40,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:40,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:40,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:40,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:40,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:40,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:40,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:40,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 20:19:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:40,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:40,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:40,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:40,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:19:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:19:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:40,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:19:40,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847439336] [2020-10-27 20:19:40,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:40,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 20:19:40,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079387311] [2020-10-27 20:19:40,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 20:19:40,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:40,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 20:19:40,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:19:40,655 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 6 states. [2020-10-27 20:19:40,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:40,879 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 20:19:40,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:19:40,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-27 20:19:40,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:40,881 INFO L225 Difference]: With dead ends: 39 [2020-10-27 20:19:40,881 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 20:19:40,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:19:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 20:19:40,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 20:19:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 20:19:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-27 20:19:40,889 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2020-10-27 20:19:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:40,890 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-27 20:19:40,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 20:19:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-27 20:19:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 20:19:40,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:40,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:40,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:19:40,891 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:40,892 INFO L82 PathProgramCache]: Analyzing trace with hash 699166253, now seen corresponding path program 1 times [2020-10-27 20:19:40,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:40,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834857493] [2020-10-27 20:19:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:40,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:40,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:40,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 20:19:40,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:40,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 20:19:40,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:19:40,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 20:19:40,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:41,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:19:41,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:41,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 20:19:41,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834857493] [2020-10-27 20:19:41,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:19:41,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 20:19:41,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082027723] [2020-10-27 20:19:41,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:41,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:41,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:41,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:41,033 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2020-10-27 20:19:41,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:41,268 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-27 20:19:41,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:19:41,269 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-27 20:19:41,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:41,270 INFO L225 Difference]: With dead ends: 52 [2020-10-27 20:19:41,270 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 20:19:41,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:19:41,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 20:19:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-10-27 20:19:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 20:19:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 20:19:41,279 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 19 [2020-10-27 20:19:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:41,279 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 20:19:41,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 20:19:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 20:19:41,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:41,280 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:41,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:19:41,281 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:41,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:41,281 INFO L82 PathProgramCache]: Analyzing trace with hash -419917195, now seen corresponding path program 2 times [2020-10-27 20:19:41,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:41,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819201436] [2020-10-27 20:19:41,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:19:41,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 20:19:41,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:19:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:19:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:19:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:19:41,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:41,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:41,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:19:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 20:19:41,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819201436] [2020-10-27 20:19:41,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:19:41,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 20:19:41,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526169469] [2020-10-27 20:19:41,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 20:19:41,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:41,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 20:19:41,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 20:19:41,496 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 8 states. [2020-10-27 20:19:41,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:41,769 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-10-27 20:19:41,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 20:19:41,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-10-27 20:19:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:41,770 INFO L225 Difference]: With dead ends: 40 [2020-10-27 20:19:41,770 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 20:19:41,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:19:41,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 20:19:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2020-10-27 20:19:41,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 20:19:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-10-27 20:19:41,778 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 22 [2020-10-27 20:19:41,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:41,778 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-10-27 20:19:41,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 20:19:41,778 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-10-27 20:19:41,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 20:19:41,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:19:41,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:19:41,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:19:41,779 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:19:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:19:41,780 INFO L82 PathProgramCache]: Analyzing trace with hash 95948546, now seen corresponding path program 1 times [2020-10-27 20:19:41,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:19:41,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215643380] [2020-10-27 20:19:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:19:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-27 20:19:41,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 20:19:41,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:19:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 20:19:41,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 20:19:41,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:19:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:19:41,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:19:41,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:19:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:41,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:19:41,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:19:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:19:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:19:41,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:19:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:19:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:19:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:19:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:19:41,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215643380] [2020-10-27 20:19:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:19:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:19:41,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268825134] [2020-10-27 20:19:41,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:19:41,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:19:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:19:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:19:41,958 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 7 states. [2020-10-27 20:19:42,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:19:42,169 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-10-27 20:19:42,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 20:19:42,169 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-10-27 20:19:42,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:19:42,169 INFO L225 Difference]: With dead ends: 26 [2020-10-27 20:19:42,169 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 20:19:42,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-27 20:19:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 20:19:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 20:19:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 20:19:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 20:19:42,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-27 20:19:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:19:42,171 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 20:19:42,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:19:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 20:19:42,171 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 20:19:42,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:19:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 20:19:42,692 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-27 20:19:42,693 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-27 20:19:42,693 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-27 20:19:42,693 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-27 20:19:42,693 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-27 20:19:42,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 20:19:42,694 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:42,694 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:42,695 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-27 20:19:42,695 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-27 20:19:42,695 INFO L274 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-10-27 20:19:42,695 INFO L274 CegarLoopResult]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2020-10-27 20:19:42,695 INFO L270 CegarLoopResult]: At program point L28-2(lines 28 33) the Hoare annotation is: (or (and (<= 0 main_~m~0) (<= 0 main_~x~0) (<= main_~m~0 0)) (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))) [2020-10-27 20:19:42,695 INFO L270 CegarLoopResult]: At program point L28-3(lines 28 33) the Hoare annotation is: (or (and (<= 1 main_~x~0) (<= 1 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0))) (and (or (<= 0 main_~m~0) (let ((.cse0 (+ main_~m~0 1))) (and (<= main_~x~0 .cse0) (<= main_~n~0 .cse0)))) (<= main_~m~0 0))) [2020-10-27 20:19:42,695 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2020-10-27 20:19:42,696 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2020-10-27 20:19:42,696 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-27 20:19:42,696 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (or (<= main_~m~0 0) (and (<= 1 main_~x~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)))) [2020-10-27 20:19:42,701 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:19:42,701 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-27 20:19:42,701 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-27 20:19:42,701 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 20:19:42,701 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 20:19:42,701 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-27 20:19:42,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:19:42 BoogieIcfgContainer [2020-10-27 20:19:42,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:19:42,729 INFO L168 Benchmark]: Toolchain (without parser) took 5697.12 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 127.3 MB in the beginning and 124.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 103.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:42,735 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:19:42,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:42,737 INFO L168 Benchmark]: Boogie Preprocessor took 36.09 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:42,737 INFO L168 Benchmark]: RCFGBuilder took 366.93 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 102.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:42,738 INFO L168 Benchmark]: TraceAbstraction took 4997.68 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 101.8 MB in the beginning and 124.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 8.0 GB. [2020-10-27 20:19:42,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 123.0 MB in the beginning and 122.9 MB in the end (delta: 102.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 281.12 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 117.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.09 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 366.93 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 102.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4997.68 ms. Allocated memory was 151.0 MB in the beginning and 191.9 MB in the end (delta: 40.9 MB). Free memory was 101.8 MB in the beginning and 124.0 MB in the end (delta: -22.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: ((0 <= m && 0 <= x) && m <= 0) || ((1 <= x && 1 <= m) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 162 SDslu, 160 SDs, 0 SdLazy, 384 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, 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, 7 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 32 PreInvPairs, 41 NumberOfFragments, 107 HoareAnnotationTreeSize, 32 FomulaSimplifications, 1877 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 525 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 7234 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 16/27 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...