/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:11:29,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:11:29,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:11:29,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:11:29,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:11:29,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:11:29,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:11:29,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:11:29,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:11:29,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:11:29,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:11:29,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:11:29,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:11:29,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:11:29,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:11:29,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:11:29,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:11:29,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:11:29,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:11:29,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:11:29,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:11:29,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:11:29,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:11:29,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:11:29,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:11:29,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:11:29,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:11:29,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:11:29,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:11:29,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:11:29,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:11:29,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:11:29,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:11:29,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:11:29,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:11:29,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:11:29,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:11:29,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:11:29,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:11:29,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:11:29,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:11:29,680 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 [2020-09-24 16:11:29,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:11:29,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:11:29,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:11:29,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:11:29,730 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:11:29,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:11:29,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:11:29,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:11:29,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:11:29,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:11:29,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:11:29,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:11:29,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:11:29,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:11:29,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:11:29,734 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:11:29,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:11:29,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:11:29,735 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:11:29,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:11:29,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:11:29,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:11:29,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:11:29,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:11:29,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:11:29,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:11:29,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:11:29,736 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:11:29,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:11:29,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:11:30,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:11:30,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:11:30,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:11:30,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:11:30,267 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:11:30,268 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-09-24 16:11:30,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91152004/fe106e63265b4edd9524b44f93c557cf/FLAGfe25d46ce [2020-09-24 16:11:30,897 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:11:30,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-09-24 16:11:30,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91152004/fe106e63265b4edd9524b44f93c557cf/FLAGfe25d46ce [2020-09-24 16:11:31,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f91152004/fe106e63265b4edd9524b44f93c557cf [2020-09-24 16:11:31,282 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:11:31,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:11:31,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:31,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:11:31,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:11:31,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1840d501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31, skipping insertion in model container [2020-09-24 16:11:31,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:11:31,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:11:31,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:31,558 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:11:31,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:11:31,599 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:11:31,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31 WrapperNode [2020-09-24 16:11:31,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:11:31,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:11:31,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:11:31,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:11:31,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (1/1) ... [2020-09-24 16:11:31,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:11:31,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:11:31,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:11:31,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:11:31,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (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 [2020-09-24 16:11:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:11:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:11:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:11:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:11:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:11:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:11:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:11:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:11:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:11:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:11:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:11:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:11:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:11:32,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:11:32,068 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 16:11:32,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:32 BoogieIcfgContainer [2020-09-24 16:11:32,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:11:32,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:11:32,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:11:32,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:11:32,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:11:31" (1/3) ... [2020-09-24 16:11:32,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:32, skipping insertion in model container [2020-09-24 16:11:32,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:11:31" (2/3) ... [2020-09-24 16:11:32,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3facba72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:11:32, skipping insertion in model container [2020-09-24 16:11:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:11:32" (3/3) ... [2020-09-24 16:11:32,103 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2020-09-24 16:11:32,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:11:32,150 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:11:32,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:11:32,199 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:11:32,200 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:11:32,200 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:11:32,200 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:11:32,200 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:11:32,200 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:11:32,200 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:11:32,200 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:11:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 16:11:32,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 16:11:32,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:32,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:32,230 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:32,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:32,237 INFO L82 PathProgramCache]: Analyzing trace with hash 317967837, now seen corresponding path program 1 times [2020-09-24 16:11:32,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:32,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [619247000] [2020-09-24 16:11:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:32,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:32,469 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:32,470 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:32,471 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:32,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 16:11:32,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:32,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 16:11:32,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 16:11:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:32,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:11:32,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:32,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:32,780 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:32,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:32,781 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:32,781 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:32,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:32,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:32,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:32,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:32,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:32,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [619247000] [2020-09-24 16:11:32,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:11:32,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 16:11:32,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063121645] [2020-09-24 16:11:32,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 16:11:32,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:32,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 16:11:32,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:11:32,826 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2020-09-24 16:11:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:33,112 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-09-24 16:11:33,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 16:11:33,114 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-09-24 16:11:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:33,128 INFO L225 Difference]: With dead ends: 70 [2020-09-24 16:11:33,128 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 16:11:33,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-09-24 16:11:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 16:11:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-09-24 16:11:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-24 16:11:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-24 16:11:33,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-09-24 16:11:33,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:33,184 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-24 16:11:33,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 16:11:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-24 16:11:33,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:11:33,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:33,186 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:11:33,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:11:33,187 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:33,188 INFO L82 PathProgramCache]: Analyzing trace with hash -628039010, now seen corresponding path program 1 times [2020-09-24 16:11:33,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:33,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467435869] [2020-09-24 16:11:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:33,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:33,267 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:33,267 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:33,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:33,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:11:33,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:33,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 16:11:33,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:11:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:33,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:11:33,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:33,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:33,571 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:33,571 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:33,572 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:33,572 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:33,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:33,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:33,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:33,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467435869] [2020-09-24 16:11:33,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:33,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:11:33,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091915875] [2020-09-24 16:11:33,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:11:33,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:33,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:11:33,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:11:33,585 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2020-09-24 16:11:33,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:33,967 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-09-24 16:11:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:11:33,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-24 16:11:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:33,970 INFO L225 Difference]: With dead ends: 53 [2020-09-24 16:11:33,970 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 16:11:33,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:11:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 16:11:33,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-09-24 16:11:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 16:11:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-09-24 16:11:33,980 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 27 [2020-09-24 16:11:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:33,981 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-09-24 16:11:33,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:11:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-09-24 16:11:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 16:11:33,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:33,982 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 16:11:33,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:11:33,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:33,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1791276066, now seen corresponding path program 1 times [2020-09-24 16:11:33,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:33,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988358074] [2020-09-24 16:11:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:34,038 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:34,038 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:34,038 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:34,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:11:34,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:34,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 16:11:34,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 16:11:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:34,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 16:11:34,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:34,323 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:34,324 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:34,324 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:34,325 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:34,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:34,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:34,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:34,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:34,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:34,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:34,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:11:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:11:34,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988358074] [2020-09-24 16:11:34,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:34,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:11:34,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890452970] [2020-09-24 16:11:34,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:11:34,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:34,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:11:34,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:11:34,339 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 12 states. [2020-09-24 16:11:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:34,704 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-09-24 16:11:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 16:11:34,704 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-09-24 16:11:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:34,706 INFO L225 Difference]: With dead ends: 54 [2020-09-24 16:11:34,706 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 16:11:34,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:11:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 16:11:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 41. [2020-09-24 16:11:34,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 16:11:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-09-24 16:11:34,714 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 27 [2020-09-24 16:11:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:34,714 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-09-24 16:11:34,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:11:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-09-24 16:11:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:11:34,716 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:34,716 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-24 16:11:34,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:11:34,717 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:34,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1600642371, now seen corresponding path program 2 times [2020-09-24 16:11:34,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:34,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436692444] [2020-09-24 16:11:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:34,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:34,782 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:34,782 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:34,782 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:34,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:11:34,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:34,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 16:11:34,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:11:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:34,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:11:34,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:35,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,079 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,080 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:35,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:35,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:35,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:11:35,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436692444] [2020-09-24 16:11:35,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:35,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:11:35,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934830881] [2020-09-24 16:11:35,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:11:35,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:35,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:11:35,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:35,091 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 14 states. [2020-09-24 16:11:35,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:35,547 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-09-24 16:11:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:35,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-24 16:11:35,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:35,560 INFO L225 Difference]: With dead ends: 58 [2020-09-24 16:11:35,560 INFO L226 Difference]: Without dead ends: 53 [2020-09-24 16:11:35,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:11:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-24 16:11:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2020-09-24 16:11:35,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 16:11:35,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-09-24 16:11:35,571 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 34 [2020-09-24 16:11:35,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:35,571 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-09-24 16:11:35,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:11:35,572 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-09-24 16:11:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:11:35,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:35,573 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-24 16:11:35,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:11:35,574 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:35,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:35,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1531087869, now seen corresponding path program 1 times [2020-09-24 16:11:35,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:35,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559997220] [2020-09-24 16:11:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,627 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,628 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,628 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,628 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:11:35,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 16:11:35,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:11:35,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:35,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:11:35,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:35,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:35,911 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:35,911 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:35,911 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:11:35,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559997220] [2020-09-24 16:11:35,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:35,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:11:35,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24659484] [2020-09-24 16:11:35,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:11:35,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:35,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:11:35,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:35,921 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 14 states. [2020-09-24 16:11:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:36,484 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-09-24 16:11:36,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 16:11:36,485 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-24 16:11:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:36,487 INFO L225 Difference]: With dead ends: 65 [2020-09-24 16:11:36,487 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 16:11:36,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-09-24 16:11:36,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 16:11:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 42. [2020-09-24 16:11:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 16:11:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-09-24 16:11:36,504 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 34 [2020-09-24 16:11:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:36,504 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-09-24 16:11:36,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:11:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-09-24 16:11:36,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 16:11:36,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:36,511 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-24 16:11:36,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:11:36,512 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash -966733443, now seen corresponding path program 2 times [2020-09-24 16:11:36,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:36,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919108040] [2020-09-24 16:11:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:36,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:36,596 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:36,596 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:36,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:36,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 16:11:36,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:36,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 16:11:36,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 16:11:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:36,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 16:11:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:36,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:36,869 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:36,869 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:36,870 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:36,870 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:36,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:36,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:36,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:11:36,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:36,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:36,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 16:11:36,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919108040] [2020-09-24 16:11:36,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:36,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 16:11:36,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017866984] [2020-09-24 16:11:36,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:11:36,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:36,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:11:36,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:11:36,879 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 14 states. [2020-09-24 16:11:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:37,453 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2020-09-24 16:11:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 16:11:37,456 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-24 16:11:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:37,457 INFO L225 Difference]: With dead ends: 85 [2020-09-24 16:11:37,458 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 16:11:37,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2020-09-24 16:11:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 16:11:37,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-09-24 16:11:37,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 16:11:37,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-24 16:11:37,465 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2020-09-24 16:11:37,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:37,466 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-24 16:11:37,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:11:37,466 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-24 16:11:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 16:11:37,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:11:37,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:11:37,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:11:37,468 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:11:37,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:11:37,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1509294206, now seen corresponding path program 3 times [2020-09-24 16:11:37,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:11:37,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442790311] [2020-09-24 16:11:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:11:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:37,523 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:37,523 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:37,523 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:37,523 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:37,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 16:11:37,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:37,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 16:11:37,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:37,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 16:11:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:11:37,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:11:37,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:37,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:11:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:11:37,876 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:11:37,877 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:11:37,877 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:11:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:11:37,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 16:11:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:11:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:11:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:11:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:11:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:11:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:11:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:11:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 16:11:37,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442790311] [2020-09-24 16:11:37,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:11:37,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 16:11:37,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282993283] [2020-09-24 16:11:37,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 16:11:37,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:11:37,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 16:11:37,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-24 16:11:37,911 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 15 states. [2020-09-24 16:11:38,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:11:38,443 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-09-24 16:11:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:11:38,443 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-09-24 16:11:38,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:11:38,444 INFO L225 Difference]: With dead ends: 63 [2020-09-24 16:11:38,446 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 16:11:38,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-09-24 16:11:38,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 16:11:38,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 16:11:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 16:11:38,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 16:11:38,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-09-24 16:11:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:11:38,448 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 16:11:38,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 16:11:38,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 16:11:38,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 16:11:38,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:11:38,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 16:11:38,580 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 16:11:38,581 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:38,581 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 16:11:38,581 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 16:11:38,581 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 16:11:38,581 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 16:11:38,582 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 16:11:38,583 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 29) no Hoare annotation was computed. [2020-09-24 16:11:38,583 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 16:11:38,583 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 16:11:38,583 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,583 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 26) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 (* 3 main_~n~0)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2020-09-24 16:11:38,584 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,584 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 26) the Hoare annotation is: (let ((.cse1 (* 3 main_~n~0)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-09-24 16:11:38,584 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,584 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 29) no Hoare annotation was computed. [2020-09-24 16:11:38,584 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,584 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L15-5(line 15) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 29) the Hoare annotation is: true [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 24) no Hoare annotation was computed. [2020-09-24 16:11:38,585 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 24) no Hoare annotation was computed. [2020-09-24 16:11:38,586 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 16:11:38,587 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 16:11:38,587 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:38,587 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 16:11:38,587 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 16:11:38,587 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 16:11:38,587 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 16:11:38,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:11:38 BoogieIcfgContainer [2020-09-24 16:11:38,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:11:38,614 INFO L168 Benchmark]: Toolchain (without parser) took 7328.58 ms. Allocated memory was 141.0 MB in the beginning and 275.8 MB in the end (delta: 134.7 MB). Free memory was 104.9 MB in the beginning and 167.4 MB in the end (delta: -62.5 MB). Peak memory consumption was 72.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:38,615 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:11:38,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.99 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:38,617 INFO L168 Benchmark]: Boogie Preprocessor took 115.10 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 94.8 MB in the beginning and 180.5 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:38,618 INFO L168 Benchmark]: RCFGBuilder took 357.65 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 167.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:38,619 INFO L168 Benchmark]: TraceAbstraction took 6524.06 ms. Allocated memory was 202.4 MB in the beginning and 275.8 MB in the end (delta: 73.4 MB). Free memory was 166.6 MB in the beginning and 167.4 MB in the end (delta: -833.4 kB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:11:38,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.99 ms. Allocated memory is still 141.0 MB. Free memory was 104.2 MB in the beginning and 94.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.10 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 94.8 MB in the beginning and 180.5 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.65 ms. Allocated memory is still 202.4 MB. Free memory was 180.5 MB in the beginning and 167.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6524.06 ms. Allocated memory was 202.4 MB in the beginning and 275.8 MB in the end (delta: 73.4 MB). Free memory was 166.6 MB in the beginning and 167.4 MB in the end (delta: -833.4 kB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (a + b <= 3 * n && 3 * i <= a + b) && a + b <= 3 * i - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 172 SDtfs, 319 SDslu, 1128 SDs, 0 SdLazy, 948 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 184 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, 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, 77 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 23 NumberOfFragments, 42 HoareAnnotationTreeSize, 15 FomulaSimplifications, 753 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 70731 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 9/41 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...