/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:32:44,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:32:44,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:32:44,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:32:44,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:32:44,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:32:44,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:32:44,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:32:44,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:32:44,665 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:32:44,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:32:44,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:32:44,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:32:44,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:32:44,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:32:44,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:32:44,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:32:44,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:32:44,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:32:44,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:32:44,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:32:44,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:32:44,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:32:44,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:32:44,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:32:44,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:32:44,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:32:44,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:32:44,692 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:32:44,693 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:32:44,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:32:44,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:32:44,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:32:44,697 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:32:44,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:32:44,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:32:44,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:32:44,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:32:44,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:32:44,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:32:44,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:32:44,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:32:44,731 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:32:44,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:32:44,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:32:44,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:32:44,733 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:32:44,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:32:44,734 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:32:44,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:32:44,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:32:44,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:32:44,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:32:44,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:32:44,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:32:44,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:32:44,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:32:44,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:32:44,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:32:44,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:32:44,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:32:44,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:32:44,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:32:44,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:32:44,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:32:44,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:32:44,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:32:44,739 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:32:44,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:32:44,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:32:44,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:32:44,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:32:45,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:32:45,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:32:45,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:32:45,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:32:45,228 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:32:45,230 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-21 12:32:45,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d5bb775/2a8a5caa6fe94aae85e090cc7ff5cb51/FLAGb87b396b5 [2020-09-21 12:32:45,903 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:32:45,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-09-21 12:32:45,916 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d5bb775/2a8a5caa6fe94aae85e090cc7ff5cb51/FLAGb87b396b5 [2020-09-21 12:32:46,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/88d5bb775/2a8a5caa6fe94aae85e090cc7ff5cb51 [2020-09-21 12:32:46,262 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:32:46,270 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:32:46,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:46,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:32:46,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:32:46,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46, skipping insertion in model container [2020-09-21 12:32:46,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:32:46,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:32:46,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:46,609 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:32:46,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:32:46,671 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:32:46,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46 WrapperNode [2020-09-21 12:32:46,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:32:46,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:32:46,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:32:46,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:32:46,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (1/1) ... [2020-09-21 12:32:46,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:32:46,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:32:46,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:32:46,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:32:46,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (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 [2020-09-21 12:32:46,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:32:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:32:46,900 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:32:46,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:32:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:32:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:32:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:32:46,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:32:47,379 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:32:47,380 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 12:32:47,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:47 BoogieIcfgContainer [2020-09-21 12:32:47,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:32:47,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:32:47,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:32:47,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:32:47,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:32:46" (1/3) ... [2020-09-21 12:32:47,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57885c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:47, skipping insertion in model container [2020-09-21 12:32:47,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:32:46" (2/3) ... [2020-09-21 12:32:47,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57885c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:32:47, skipping insertion in model container [2020-09-21 12:32:47,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:32:47" (3/3) ... [2020-09-21 12:32:47,401 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-09-21 12:32:47,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:32:47,426 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:32:47,449 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:32:47,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:32:47,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:32:47,481 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:32:47,481 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:32:47,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:32:47,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:32:47,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:32:47,482 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:32:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-09-21 12:32:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:32:47,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:47,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:47,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-09-21 12:32:47,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:47,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830986798] [2020-09-21 12:32:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:32:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 12:32:47,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:32:47,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:32:47,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:47,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:32:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:47,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830986798] [2020-09-21 12:32:47,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:47,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:32:47,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438321791] [2020-09-21 12:32:47,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:32:47,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:32:47,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:32:47,979 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-09-21 12:32:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:48,047 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-09-21 12:32:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:32:48,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 12:32:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:48,064 INFO L225 Difference]: With dead ends: 136 [2020-09-21 12:32:48,065 INFO L226 Difference]: Without dead ends: 61 [2020-09-21 12:32:48,070 INFO L675 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 [2020-09-21 12:32:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-21 12:32:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-21 12:32:48,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-21 12:32:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-09-21 12:32:48,124 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-09-21 12:32:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:48,125 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-09-21 12:32:48,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:32:48,125 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-09-21 12:32:48,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:32:48,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:48,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:48,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:32:48,127 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:48,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:48,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-09-21 12:32:48,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:48,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16403426] [2020-09-21 12:32:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:32:48,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:32:48,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-21 12:32:48,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:32:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:32:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:48,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:48,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:48,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:32:48,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:48,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:48,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16403426] [2020-09-21 12:32:48,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:48,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:32:48,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791817880] [2020-09-21 12:32:48,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:48,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:48,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:48,380 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 4 states. [2020-09-21 12:32:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:48,634 INFO L93 Difference]: Finished difference Result 119 states and 180 transitions. [2020-09-21 12:32:48,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:32:48,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 12:32:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:48,637 INFO L225 Difference]: With dead ends: 119 [2020-09-21 12:32:48,637 INFO L226 Difference]: Without dead ends: 64 [2020-09-21 12:32:48,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-21 12:32:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-09-21 12:32:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 12:32:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2020-09-21 12:32:48,651 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 14 [2020-09-21 12:32:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:48,652 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2020-09-21 12:32:48,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2020-09-21 12:32:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:32:48,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:48,653 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:48,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:32:48,654 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:48,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:48,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-09-21 12:32:48,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:48,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286775795] [2020-09-21 12:32:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:32:48,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:48,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-21 12:32:48,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:32:48,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:32:48,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:48,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:48,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:48,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:48,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:48,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:48,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286775795] [2020-09-21 12:32:48,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:48,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:32:48,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999890408] [2020-09-21 12:32:48,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:48,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:48,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:48,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:48,896 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand 4 states. [2020-09-21 12:32:49,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,131 INFO L93 Difference]: Finished difference Result 174 states and 264 transitions. [2020-09-21 12:32:49,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:32:49,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 12:32:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,134 INFO L225 Difference]: With dead ends: 174 [2020-09-21 12:32:49,134 INFO L226 Difference]: Without dead ends: 113 [2020-09-21 12:32:49,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-21 12:32:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 104. [2020-09-21 12:32:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-21 12:32:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 156 transitions. [2020-09-21 12:32:49,149 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 156 transitions. Word has length 19 [2020-09-21 12:32:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,149 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 156 transitions. [2020-09-21 12:32:49,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 156 transitions. [2020-09-21 12:32:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:32:49,151 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,151 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:49,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:32:49,151 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1053906313, now seen corresponding path program 1 times [2020-09-21 12:32:49,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67773142] [2020-09-21 12:32:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:32:49,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-21 12:32:49,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:32:49,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:32:49,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:49,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:49,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67773142] [2020-09-21 12:32:49,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:49,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:32:49,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294784080] [2020-09-21 12:32:49,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:49,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:49,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:49,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:49,274 INFO L87 Difference]: Start difference. First operand 104 states and 156 transitions. Second operand 4 states. [2020-09-21 12:32:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,337 INFO L93 Difference]: Finished difference Result 188 states and 285 transitions. [2020-09-21 12:32:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:32:49,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-21 12:32:49,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,339 INFO L225 Difference]: With dead ends: 188 [2020-09-21 12:32:49,339 INFO L226 Difference]: Without dead ends: 91 [2020-09-21 12:32:49,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-21 12:32:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-09-21 12:32:49,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-21 12:32:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 132 transitions. [2020-09-21 12:32:49,351 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 132 transitions. Word has length 20 [2020-09-21 12:32:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,351 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 132 transitions. [2020-09-21 12:32:49,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 132 transitions. [2020-09-21 12:32:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:32:49,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,353 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:49,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:32:49,353 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-09-21 12:32:49,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910215015] [2020-09-21 12:32:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:32:49,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:32:49,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-21 12:32:49,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:32:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:32:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:32:49,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:32:49,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910215015] [2020-09-21 12:32:49,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:49,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:32:49,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485160485] [2020-09-21 12:32:49,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:49,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:49,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:49,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:49,525 INFO L87 Difference]: Start difference. First operand 91 states and 132 transitions. Second operand 4 states. [2020-09-21 12:32:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,662 INFO L93 Difference]: Finished difference Result 184 states and 268 transitions. [2020-09-21 12:32:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:32:49,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 12:32:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,664 INFO L225 Difference]: With dead ends: 184 [2020-09-21 12:32:49,664 INFO L226 Difference]: Without dead ends: 105 [2020-09-21 12:32:49,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:49,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-21 12:32:49,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-21 12:32:49,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-21 12:32:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 146 transitions. [2020-09-21 12:32:49,676 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 146 transitions. Word has length 25 [2020-09-21 12:32:49,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,676 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 146 transitions. [2020-09-21 12:32:49,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 146 transitions. [2020-09-21 12:32:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 12:32:49,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,678 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:49,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:32:49,679 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,679 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-09-21 12:32:49,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610251248] [2020-09-21 12:32:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:32:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 12:32:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:32:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:32:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:32:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:49,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:49,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:49,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:49,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:32:49,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:49,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:49,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:49,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:32:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:32:49,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610251248] [2020-09-21 12:32:49,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:49,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:32:49,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401999721] [2020-09-21 12:32:49,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:32:49,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:49,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:32:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:32:49,833 INFO L87 Difference]: Start difference. First operand 103 states and 146 transitions. Second operand 4 states. [2020-09-21 12:32:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:49,927 INFO L93 Difference]: Finished difference Result 170 states and 243 transitions. [2020-09-21 12:32:49,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:32:49,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 12:32:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:49,929 INFO L225 Difference]: With dead ends: 170 [2020-09-21 12:32:49,929 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 12:32:49,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 12:32:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-21 12:32:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-21 12:32:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 108 transitions. [2020-09-21 12:32:49,940 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 108 transitions. Word has length 36 [2020-09-21 12:32:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:49,940 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 108 transitions. [2020-09-21 12:32:49,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:32:49,941 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 108 transitions. [2020-09-21 12:32:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:32:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:32:49,942 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:32:49,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:32:49,943 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:32:49,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:32:49,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-09-21 12:32:49,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:32:49,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661831954] [2020-09-21 12:32:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:32:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:49,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:32:50,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-21 12:32:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:32:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:32:50,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:32:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:32:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:32:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:32:50,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:32:50,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:32:50,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:32:50,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:32:50,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:32:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:32:50,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:32:50,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:32:50,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:32:50,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:32:50,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661831954] [2020-09-21 12:32:50,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:32:50,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:32:50,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839119961] [2020-09-21 12:32:50,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:32:50,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:32:50,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:32:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:32:50,147 INFO L87 Difference]: Start difference. First operand 79 states and 108 transitions. Second operand 5 states. [2020-09-21 12:32:50,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:32:50,394 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-09-21 12:32:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:32:50,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-21 12:32:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:32:50,396 INFO L225 Difference]: With dead ends: 82 [2020-09-21 12:32:50,396 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:32:50,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:32:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:32:50,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:32:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:32:50,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:32:50,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-09-21 12:32:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:32:50,399 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:32:50,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:32:50,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:32:50,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:32:50,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:32:50,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:32:50,646 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 18 [2020-09-21 12:32:50,734 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:32:50,734 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_flush~0 |old(~m_flush~0)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|)) [2020-09-21 12:32:50,734 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:32:50,734 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:32:50,735 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:32:50,735 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:32:50,735 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:32:50,735 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-09-21 12:32:50,735 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-09-21 12:32:50,735 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-09-21 12:32:50,736 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-09-21 12:32:50,737 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-09-21 12:32:50,738 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-09-21 12:32:50,738 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-09-21 12:32:50,738 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-09-21 12:32:50,739 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-09-21 12:32:50,739 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (or (= main_~q~0 0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) (= main_~this_sink~0 0) (<= main_~q~0 2))) [2020-09-21 12:32:50,739 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-09-21 12:32:50,739 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-09-21 12:32:50,739 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-09-21 12:32:50,739 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-09-21 12:32:50,740 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-09-21 12:32:50,741 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-09-21 12:32:50,742 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-09-21 12:32:50,743 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)))) [2020-09-21 12:32:50,743 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-09-21 12:32:50,743 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-09-21 12:32:50,743 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-09-21 12:32:50,743 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-09-21 12:32:50,743 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-09-21 12:32:50,744 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-09-21 12:32:50,745 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-09-21 12:32:50,746 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-09-21 12:32:50,747 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-09-21 12:32:50,747 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-09-21 12:32:50,747 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-09-21 12:32:50,748 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-09-21 12:32:50,748 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-09-21 12:32:50,748 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-09-21 12:32:50,749 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-09-21 12:32:50,751 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-09-21 12:32:50,751 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-09-21 12:32:50,752 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-09-21 12:32:50,752 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-09-21 12:32:50,752 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-09-21 12:32:50,752 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-09-21 12:32:50,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:32:50 BoogieIcfgContainer [2020-09-21 12:32:50,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:32:50,784 INFO L168 Benchmark]: Toolchain (without parser) took 4519.83 ms. Allocated memory was 139.5 MB in the beginning and 246.9 MB in the end (delta: 107.5 MB). Free memory was 102.1 MB in the beginning and 198.6 MB in the end (delta: -96.5 MB). Peak memory consumption was 114.9 MB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,791 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,792 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.76 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 89.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,794 INFO L168 Benchmark]: Boogie Preprocessor took 135.26 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 89.2 MB in the beginning and 179.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,795 INFO L168 Benchmark]: RCFGBuilder took 577.83 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 152.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,796 INFO L168 Benchmark]: TraceAbstraction took 3394.17 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 151.3 MB in the beginning and 198.6 MB in the end (delta: -47.3 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:32:50,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.76 ms. Allocated memory is still 139.5 MB. Free memory was 101.5 MB in the beginning and 89.2 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.26 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 89.2 MB in the beginning and 179.6 MB in the end (delta: -90.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 577.83 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 152.0 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3394.17 ms. Allocated memory was 202.4 MB in the beginning and 246.9 MB in the end (delta: 44.6 MB). Free memory was 151.3 MB in the beginning and 198.6 MB in the end (delta: -47.3 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: (q == 0 || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 561 SDtfs, 834 SDslu, 50 SDs, 0 SdLazy, 372 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 81 HoareAnnotationTreeSize, 7 FomulaSimplifications, 125 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 139 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 11593 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...