./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive/Fibonacci03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 17:28:16,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 17:28:16,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 17:28:16,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 17:28:16,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 17:28:16,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 17:28:16,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 17:28:16,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 17:28:16,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 17:28:16,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 17:28:16,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 17:28:16,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 17:28:16,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 17:28:16,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 17:28:16,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 17:28:16,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 17:28:16,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 17:28:16,308 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 17:28:16,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 17:28:16,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 17:28:16,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 17:28:16,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 17:28:16,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 17:28:16,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 17:28:16,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 17:28:16,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 17:28:16,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 17:28:16,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 17:28:16,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 17:28:16,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 17:28:16,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 17:28:16,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 17:28:16,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 17:28:16,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 17:28:16,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 17:28:16,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 17:28:16,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 17:28:16,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 17:28:16,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 17:28:16,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 17:28:16,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 17:28:16,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 17:28:16,353 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 17:28:16,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 17:28:16,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 17:28:16,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 17:28:16,357 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 17:28:16,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 17:28:16,357 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 17:28:16,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 17:28:16,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 17:28:16,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 17:28:16,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 17:28:16,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 17:28:16,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 17:28:16,360 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 17:28:16,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 17:28:16,360 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 17:28:16,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 17:28:16,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 17:28:16,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 17:28:16,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 17:28:16,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 17:28:16,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 17:28:16,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 17:28:16,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 17:28:16,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 17:28:16,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 17:28:16,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 17:28:16,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 17:28:16,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 17:28:16,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e1fd2ba6533b7d8cc379ec5987b906d551e69a3 [2019-11-28 17:28:16,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 17:28:16,677 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 17:28:16,681 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 17:28:16,682 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 17:28:16,682 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 17:28:16,683 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci03.c [2019-11-28 17:28:16,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcaefd6/ffd72b91315740de86c4e9ca41cfa846/FLAG8c5d95325 [2019-11-28 17:28:17,181 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 17:28:17,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci03.c [2019-11-28 17:28:17,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcaefd6/ffd72b91315740de86c4e9ca41cfa846/FLAG8c5d95325 [2019-11-28 17:28:17,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bcaefd6/ffd72b91315740de86c4e9ca41cfa846 [2019-11-28 17:28:17,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 17:28:17,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 17:28:17,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 17:28:17,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 17:28:17,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 17:28:17,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5596f513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17, skipping insertion in model container [2019-11-28 17:28:17,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 17:28:17,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 17:28:17,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:28:17,801 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 17:28:17,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 17:28:17,827 INFO L208 MainTranslator]: Completed translation [2019-11-28 17:28:17,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17 WrapperNode [2019-11-28 17:28:17,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 17:28:17,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 17:28:17,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 17:28:17,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 17:28:17,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 17:28:17,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 17:28:17,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 17:28:17,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 17:28:17,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... [2019-11-28 17:28:17,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 17:28:17,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 17:28:17,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 17:28:17,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 17:28:17,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-28 17:28:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2019-11-28 17:28:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2019-11-28 17:28:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 17:28:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 17:28:18,166 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 17:28:18,167 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-28 17:28:18,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:18 BoogieIcfgContainer [2019-11-28 17:28:18,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 17:28:18,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 17:28:18,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 17:28:18,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 17:28:18,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:28:17" (1/3) ... [2019-11-28 17:28:18,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d8c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:18, skipping insertion in model container [2019-11-28 17:28:18,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:28:17" (2/3) ... [2019-11-28 17:28:18,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d8c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:28:18, skipping insertion in model container [2019-11-28 17:28:18,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:18" (3/3) ... [2019-11-28 17:28:18,178 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci03.c [2019-11-28 17:28:18,212 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 17:28:18,235 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 17:28:18,264 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 17:28:18,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 17:28:18,290 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 17:28:18,290 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 17:28:18,291 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 17:28:18,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 17:28:18,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 17:28:18,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 17:28:18,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 17:28:18,311 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-28 17:28:18,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 17:28:18,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:18,317 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:18,318 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:18,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:18,323 INFO L82 PathProgramCache]: Analyzing trace with hash -337677157, now seen corresponding path program 1 times [2019-11-28 17:28:18,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:18,331 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793112617] [2019-11-28 17:28:18,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:28:18,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793112617] [2019-11-28 17:28:18,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:18,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:28:18,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556271568] [2019-11-28 17:28:18,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:28:18,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:18,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:28:18,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:28:18,537 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-11-28 17:28:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:18,676 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-11-28 17:28:18,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:28:18,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-28 17:28:18,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:18,687 INFO L225 Difference]: With dead ends: 31 [2019-11-28 17:28:18,688 INFO L226 Difference]: Without dead ends: 18 [2019-11-28 17:28:18,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:28:18,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-28 17:28:18,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-28 17:28:18,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 17:28:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 17:28:18,732 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2019-11-28 17:28:18,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:18,732 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 17:28:18,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:28:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-28 17:28:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 17:28:18,734 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:18,734 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:18,735 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:18,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1185838437, now seen corresponding path program 1 times [2019-11-28 17:28:18,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:18,736 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925360609] [2019-11-28 17:28:18,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 17:28:18,814 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925360609] [2019-11-28 17:28:18,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 17:28:18,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 17:28:18,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838811058] [2019-11-28 17:28:18,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 17:28:18,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:18,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 17:28:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 17:28:18,824 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 5 states. [2019-11-28 17:28:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:18,886 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2019-11-28 17:28:18,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 17:28:18,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-28 17:28:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:18,888 INFO L225 Difference]: With dead ends: 24 [2019-11-28 17:28:18,888 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 17:28:18,889 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 17:28:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 17:28:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-28 17:28:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-28 17:28:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-28 17:28:18,897 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 11 [2019-11-28 17:28:18,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:18,897 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-28 17:28:18,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 17:28:18,898 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-28 17:28:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 17:28:18,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:18,899 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:18,899 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:18,900 INFO L82 PathProgramCache]: Analyzing trace with hash -461887010, now seen corresponding path program 1 times [2019-11-28 17:28:18,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:18,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770920778] [2019-11-28 17:28:18,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 17:28:19,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770920778] [2019-11-28 17:28:19,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237618568] [2019-11-28 17:28:19,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,136 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 17:28:19,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-28 17:28:19,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:19,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2019-11-28 17:28:19,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788870261] [2019-11-28 17:28:19,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 17:28:19,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 17:28:19,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:28:19,240 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 9 states. [2019-11-28 17:28:19,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:19,404 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-28 17:28:19,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:19,405 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2019-11-28 17:28:19,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:19,406 INFO L225 Difference]: With dead ends: 35 [2019-11-28 17:28:19,407 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 17:28:19,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:28:19,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 17:28:19,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 17:28:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 17:28:19,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-28 17:28:19,426 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 23 [2019-11-28 17:28:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:19,428 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-28 17:28:19,428 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 17:28:19,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-28 17:28:19,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-28 17:28:19,431 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:19,431 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:19,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:19,637 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:19,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1032875874, now seen corresponding path program 1 times [2019-11-28 17:28:19,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:19,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089797646] [2019-11-28 17:28:19,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 17:28:19,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089797646] [2019-11-28 17:28:19,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436781962] [2019-11-28 17:28:19,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:19,874 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 17:28:19,877 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-28 17:28:19,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:19,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-11-28 17:28:19,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720335083] [2019-11-28 17:28:19,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 17:28:19,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:19,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 17:28:19,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-28 17:28:19,905 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 8 states. [2019-11-28 17:28:20,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:20,010 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2019-11-28 17:28:20,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 17:28:20,011 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-11-28 17:28:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:20,013 INFO L225 Difference]: With dead ends: 38 [2019-11-28 17:28:20,013 INFO L226 Difference]: Without dead ends: 34 [2019-11-28 17:28:20,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-28 17:28:20,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-28 17:28:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-28 17:28:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-28 17:28:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-11-28 17:28:20,036 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 24 [2019-11-28 17:28:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:20,037 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-11-28 17:28:20,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 17:28:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-11-28 17:28:20,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-28 17:28:20,041 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:20,042 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:20,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:20,249 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:20,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:20,249 INFO L82 PathProgramCache]: Analyzing trace with hash 498258551, now seen corresponding path program 2 times [2019-11-28 17:28:20,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:20,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760096407] [2019-11-28 17:28:20,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:20,455 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-11-28 17:28:20,455 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760096407] [2019-11-28 17:28:20,456 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277465901] [2019-11-28 17:28:20,456 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:20,500 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:28:20,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:20,502 INFO L264 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 17:28:20,505 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:20,595 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-28 17:28:20,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:20,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-11-28 17:28:20,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022051439] [2019-11-28 17:28:20,598 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 17:28:20,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:20,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 17:28:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-28 17:28:20,601 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 14 states. [2019-11-28 17:28:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:20,878 INFO L93 Difference]: Finished difference Result 68 states and 103 transitions. [2019-11-28 17:28:20,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 17:28:20,879 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2019-11-28 17:28:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:20,880 INFO L225 Difference]: With dead ends: 68 [2019-11-28 17:28:20,883 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 17:28:20,884 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2019-11-28 17:28:20,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 17:28:20,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-28 17:28:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-28 17:28:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-11-28 17:28:20,892 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 37 [2019-11-28 17:28:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:20,893 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-11-28 17:28:20,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 17:28:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-11-28 17:28:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-28 17:28:20,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:20,896 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:21,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:21,100 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:21,100 INFO L82 PathProgramCache]: Analyzing trace with hash -2059564305, now seen corresponding path program 3 times [2019-11-28 17:28:21,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:21,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958562957] [2019-11-28 17:28:21,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 17 proven. 88 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-11-28 17:28:21,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958562957] [2019-11-28 17:28:21,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272740035] [2019-11-28 17:28:21,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:21,433 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 17:28:21,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:21,435 INFO L264 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 17:28:21,438 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-11-28 17:28:21,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:21,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 12 [2019-11-28 17:28:21,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563757926] [2019-11-28 17:28:21,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 17:28:21,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 17:28:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-11-28 17:28:21,466 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 12 states. [2019-11-28 17:28:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:21,658 INFO L93 Difference]: Finished difference Result 77 states and 108 transitions. [2019-11-28 17:28:21,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 17:28:21,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2019-11-28 17:28:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:21,667 INFO L225 Difference]: With dead ends: 77 [2019-11-28 17:28:21,671 INFO L226 Difference]: Without dead ends: 73 [2019-11-28 17:28:21,672 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-28 17:28:21,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-28 17:28:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2019-11-28 17:28:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-28 17:28:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2019-11-28 17:28:21,693 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 65 [2019-11-28 17:28:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:21,694 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2019-11-28 17:28:21,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 17:28:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2019-11-28 17:28:21,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-11-28 17:28:21,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:21,700 INFO L410 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:21,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:21,912 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:21,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash -270971525, now seen corresponding path program 4 times [2019-11-28 17:28:21,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:21,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947721876] [2019-11-28 17:28:21,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 309 proven. 340 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2019-11-28 17:28:22,519 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947721876] [2019-11-28 17:28:22,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783485856] [2019-11-28 17:28:22,520 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:22,586 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 17:28:22,586 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:22,588 INFO L264 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-28 17:28:22,598 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 222 proven. 397 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2019-11-28 17:28:22,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:22,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13] total 23 [2019-11-28 17:28:22,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947135444] [2019-11-28 17:28:22,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-28 17:28:22,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:22,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-28 17:28:22,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2019-11-28 17:28:22,725 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand 23 states. [2019-11-28 17:28:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:23,187 INFO L93 Difference]: Finished difference Result 134 states and 224 transitions. [2019-11-28 17:28:23,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 17:28:23,188 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 147 [2019-11-28 17:28:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:23,193 INFO L225 Difference]: With dead ends: 134 [2019-11-28 17:28:23,194 INFO L226 Difference]: Without dead ends: 70 [2019-11-28 17:28:23,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2019-11-28 17:28:23,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-11-28 17:28:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2019-11-28 17:28:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-11-28 17:28:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2019-11-28 17:28:23,216 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 147 [2019-11-28 17:28:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:23,216 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2019-11-28 17:28:23,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-28 17:28:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2019-11-28 17:28:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-28 17:28:23,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:23,219 INFO L410 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:23,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:23,424 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:23,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1624397958, now seen corresponding path program 5 times [2019-11-28 17:28:23,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:23,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333427938] [2019-11-28 17:28:23,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:23,691 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-11-28 17:28:23,692 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333427938] [2019-11-28 17:28:23,693 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119290704] [2019-11-28 17:28:23,693 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:23,768 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-28 17:28:23,768 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:23,770 INFO L264 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 17:28:23,775 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2019-11-28 17:28:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:23,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 14 [2019-11-28 17:28:23,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604989995] [2019-11-28 17:28:23,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 17:28:23,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 17:28:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-11-28 17:28:23,835 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 14 states. [2019-11-28 17:28:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:23,997 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2019-11-28 17:28:23,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 17:28:23,997 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 106 [2019-11-28 17:28:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:23,999 INFO L225 Difference]: With dead ends: 64 [2019-11-28 17:28:23,999 INFO L226 Difference]: Without dead ends: 60 [2019-11-28 17:28:24,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2019-11-28 17:28:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-28 17:28:24,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2019-11-28 17:28:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-28 17:28:24,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2019-11-28 17:28:24,013 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 106 [2019-11-28 17:28:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:24,014 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2019-11-28 17:28:24,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 17:28:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2019-11-28 17:28:24,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-28 17:28:24,022 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:24,022 INFO L410 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:24,228 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:24,229 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:24,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:24,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1761307917, now seen corresponding path program 6 times [2019-11-28 17:28:24,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:24,232 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625139188] [2019-11-28 17:28:24,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2019-11-28 17:28:24,704 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625139188] [2019-11-28 17:28:24,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669086254] [2019-11-28 17:28:24,705 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:24,795 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2019-11-28 17:28:24,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:24,796 INFO L264 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 17:28:24,801 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 202 proven. 241 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2019-11-28 17:28:24,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:24,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 16 [2019-11-28 17:28:24,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381930136] [2019-11-28 17:28:24,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-28 17:28:24,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-28 17:28:24,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2019-11-28 17:28:24,866 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand 16 states. [2019-11-28 17:28:25,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:25,072 INFO L93 Difference]: Finished difference Result 178 states and 253 transitions. [2019-11-28 17:28:25,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-28 17:28:25,073 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 174 [2019-11-28 17:28:25,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:25,077 INFO L225 Difference]: With dead ends: 178 [2019-11-28 17:28:25,078 INFO L226 Difference]: Without dead ends: 174 [2019-11-28 17:28:25,079 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2019-11-28 17:28:25,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-11-28 17:28:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 162. [2019-11-28 17:28:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-28 17:28:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 230 transitions. [2019-11-28 17:28:25,105 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 230 transitions. Word has length 174 [2019-11-28 17:28:25,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:25,106 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 230 transitions. [2019-11-28 17:28:25,106 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-28 17:28:25,106 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 230 transitions. [2019-11-28 17:28:25,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2019-11-28 17:28:25,113 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:25,114 INFO L410 BasicCegarLoop]: trace histogram [53, 53, 43, 26, 26, 26, 26, 26, 26, 26, 17, 10, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:25,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:25,321 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:25,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:25,321 INFO L82 PathProgramCache]: Analyzing trace with hash 26595927, now seen corresponding path program 7 times [2019-11-28 17:28:25,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:25,322 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735916670] [2019-11-28 17:28:25,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7715 backedges. 1657 proven. 1717 refuted. 0 times theorem prover too weak. 4341 trivial. 0 not checked. [2019-11-28 17:28:26,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735916670] [2019-11-28 17:28:26,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740403366] [2019-11-28 17:28:26,800 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:26,919 INFO L264 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-28 17:28:26,924 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 7715 backedges. 219 proven. 1566 refuted. 0 times theorem prover too weak. 5930 trivial. 0 not checked. [2019-11-28 17:28:27,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:27,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 32 [2019-11-28 17:28:27,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936339275] [2019-11-28 17:28:27,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-28 17:28:27,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:27,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-28 17:28:27,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2019-11-28 17:28:27,047 INFO L87 Difference]: Start difference. First operand 162 states and 230 transitions. Second operand 32 states. [2019-11-28 17:28:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:27,806 INFO L93 Difference]: Finished difference Result 273 states and 458 transitions. [2019-11-28 17:28:27,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-28 17:28:27,807 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 365 [2019-11-28 17:28:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:27,812 INFO L225 Difference]: With dead ends: 273 [2019-11-28 17:28:27,812 INFO L226 Difference]: Without dead ends: 112 [2019-11-28 17:28:27,814 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=388, Invalid=1504, Unknown=0, NotChecked=0, Total=1892 [2019-11-28 17:28:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2019-11-28 17:28:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 86. [2019-11-28 17:28:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-28 17:28:27,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 120 transitions. [2019-11-28 17:28:27,827 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 120 transitions. Word has length 365 [2019-11-28 17:28:27,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:27,828 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 120 transitions. [2019-11-28 17:28:27,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-28 17:28:27,829 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 120 transitions. [2019-11-28 17:28:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2019-11-28 17:28:27,838 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:27,838 INFO L410 BasicCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:28,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:28,042 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:28,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1913424490, now seen corresponding path program 8 times [2019-11-28 17:28:28,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:28,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049617409] [2019-11-28 17:28:28,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-11-28 17:28:29,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049617409] [2019-11-28 17:28:29,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050298896] [2019-11-28 17:28:29,467 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:29,615 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 17:28:29,615 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:29,618 INFO L264 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-28 17:28:29,627 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2019-11-28 17:28:29,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:29,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12] total 20 [2019-11-28 17:28:29,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304065849] [2019-11-28 17:28:29,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-28 17:28:29,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-28 17:28:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2019-11-28 17:28:29,772 INFO L87 Difference]: Start difference. First operand 86 states and 120 transitions. Second operand 20 states. [2019-11-28 17:28:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:30,061 INFO L93 Difference]: Finished difference Result 333 states and 501 transitions. [2019-11-28 17:28:30,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-28 17:28:30,064 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 460 [2019-11-28 17:28:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:30,073 INFO L225 Difference]: With dead ends: 333 [2019-11-28 17:28:30,074 INFO L226 Difference]: Without dead ends: 329 [2019-11-28 17:28:30,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 593 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2019-11-28 17:28:30,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2019-11-28 17:28:30,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2019-11-28 17:28:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2019-11-28 17:28:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 463 transitions. [2019-11-28 17:28:30,147 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 463 transitions. Word has length 460 [2019-11-28 17:28:30,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:30,154 INFO L462 AbstractCegarLoop]: Abstraction has 311 states and 463 transitions. [2019-11-28 17:28:30,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-28 17:28:30,154 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 463 transitions. [2019-11-28 17:28:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2019-11-28 17:28:30,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 17:28:30,164 INFO L410 BasicCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 17:28:30,368 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:30,369 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 17:28:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 17:28:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1222363509, now seen corresponding path program 9 times [2019-11-28 17:28:30,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 17:28:30,369 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897532886] [2019-11-28 17:28:30,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 17:28:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 17:28:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-28 17:28:33,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897532886] [2019-11-28 17:28:33,996 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208283492] [2019-11-28 17:28:33,997 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:34,424 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 93 check-sat command(s) [2019-11-28 17:28:34,425 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 17:28:34,433 INFO L264 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 220 conjunts are in the unsatisfiable core [2019-11-28 17:28:34,446 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 17:28:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 5957 proven. 4942 refuted. 0 times theorem prover too weak. 22197 trivial. 0 not checked. [2019-11-28 17:28:35,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 17:28:35,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 36 [2019-11-28 17:28:35,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482552751] [2019-11-28 17:28:35,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-11-28 17:28:35,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 17:28:35,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-11-28 17:28:35,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2019-11-28 17:28:35,145 INFO L87 Difference]: Start difference. First operand 311 states and 463 transitions. Second operand 36 states. [2019-11-28 17:28:35,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 17:28:35,512 INFO L93 Difference]: Finished difference Result 394 states and 621 transitions. [2019-11-28 17:28:35,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-28 17:28:35,513 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 746 [2019-11-28 17:28:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 17:28:35,515 INFO L225 Difference]: With dead ends: 394 [2019-11-28 17:28:35,516 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 17:28:35,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1188 GetRequests, 1150 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=344, Invalid=1216, Unknown=0, NotChecked=0, Total=1560 [2019-11-28 17:28:35,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 17:28:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 17:28:35,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 17:28:35,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 17:28:35,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 746 [2019-11-28 17:28:35,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 17:28:35,522 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 17:28:35,522 INFO L463 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-11-28 17:28:35,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 17:28:35,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 17:28:35,730 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 17:28:35,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 17:28:36,409 WARN L192 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 7 [2019-11-28 17:28:36,987 WARN L192 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 44 [2019-11-28 17:28:36,993 INFO L246 CegarLoopResult]: For program point fibonacciFINAL(lines 14 22) no Hoare annotation was computed. [2019-11-28 17:28:36,994 INFO L249 CegarLoopResult]: At program point fibonacciENTRY(lines 14 22) the Hoare annotation is: true [2019-11-28 17:28:36,994 INFO L242 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (not (<= |fibonacci_#in~n| 1)) (= fibonacci_~n |fibonacci_#in~n|)) [2019-11-28 17:28:36,994 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-11-28 17:28:36,994 INFO L242 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (let ((.cse1 (<= 1 |fibonacci_#t~ret0|)) (.cse0 (<= 7 fibonacci_~n))) (or (and (<= 4 fibonacci_~n) (<= fibonacci_~n 4) (<= 2 |fibonacci_#t~ret0|)) (and (<= 8 |fibonacci_#t~ret0|) (<= |fibonacci_#in~n| 7) .cse0) (and (< 1 fibonacci_~n) .cse1 (<= |fibonacci_#in~n| 2)) (and (<= fibonacci_~n 6) (<= 5 |fibonacci_#t~ret0|) (<= 6 fibonacci_~n)) (and .cse1 (<= fibonacci_~n 3) (<= 3 fibonacci_~n)) (and (<= 21 |fibonacci_#t~ret0|) .cse0) (and (<= 3 |fibonacci_#t~ret0|) (<= fibonacci_~n 5) (<= 5 fibonacci_~n)) (and (<= 13 |fibonacci_#t~ret0|) (<= fibonacci_~n 8) .cse0))) (= fibonacci_~n |fibonacci_#in~n|)) [2019-11-28 17:28:36,994 INFO L246 CegarLoopResult]: For program point fibonacciEXIT(lines 14 22) no Hoare annotation was computed. [2019-11-28 17:28:36,994 INFO L246 CegarLoopResult]: For program point L17(lines 17 21) no Hoare annotation was computed. [2019-11-28 17:28:36,994 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point L15(lines 15 21) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point L31(lines 31 35) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L249 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: true [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point L27(lines 27 29) no Hoare annotation was computed. [2019-11-28 17:28:36,995 INFO L249 CegarLoopResult]: At program point L25(lines 25 36) the Hoare annotation is: true [2019-11-28 17:28:36,995 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2019-11-28 17:28:36,996 INFO L246 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-28 17:28:37,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:28:37 BoogieIcfgContainer [2019-11-28 17:28:37,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 17:28:37,005 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 17:28:37,005 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 17:28:37,006 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 17:28:37,007 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:28:18" (3/4) ... [2019-11-28 17:28:37,011 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 17:28:37,017 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fibonacci [2019-11-28 17:28:37,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-28 17:28:37,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-28 17:28:37,072 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 17:28:37,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 17:28:37,074 INFO L168 Benchmark]: Toolchain (without parser) took 19493.10 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 939.5 MB). Free memory was 963.0 MB in the beginning and 1.8 GB in the end (delta: -845.8 MB). Peak memory consumption was 93.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,074 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 17:28:37,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.60 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,080 INFO L168 Benchmark]: Boogie Preprocessor took 16.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,080 INFO L168 Benchmark]: RCFGBuilder took 239.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,081 INFO L168 Benchmark]: TraceAbstraction took 18833.18 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 796.4 MB). Free memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: -687.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,082 INFO L168 Benchmark]: Witness Printer took 66.98 ms. Allocated memory is still 2.0 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 356.1 kB). Peak memory consumption was 356.1 kB. Max. memory is 11.5 GB. [2019-11-28 17:28:37,093 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.60 ms. Allocated memory is still 1.0 GB. Free memory was 963.0 MB in the beginning and 952.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 85.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -187.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 239.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18833.18 ms. Allocated memory was 1.2 GB in the beginning and 2.0 GB in the end (delta: 796.4 MB). Free memory was 1.1 GB in the beginning and 1.8 GB in the end (delta: -687.8 MB). Peak memory consumption was 1.1 GB. Max. memory is 11.5 GB. * Witness Printer took 66.98 ms. Allocated memory is still 2.0 GB. Free memory was 1.8 GB in the beginning and 1.8 GB in the end (delta: 356.1 kB). Peak memory consumption was 356.1 kB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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: 25]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 17.4s, OverallIterations: 12, TraceHistogramMax: 109, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, HoareTripleCheckerStatistics: 254 SDtfs, 548 SDslu, 1277 SDs, 0 SdLazy, 2275 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3171 GetRequests, 2958 SyntacticMatches, 1 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 77 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 386 PreInvPairs, 658 NumberOfFragments, 93 HoareAnnotationTreeSize, 386 FomulaSimplifications, 723 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5026 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 4315 NumberOfCodeBlocks, 4268 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 4293 ConstructedInterpolants, 0 QuantifiedInterpolants, 3728357 SizeOfPredicates, 50 NumberOfNonLiveVariables, 4681 ConjunctsInSsa, 321 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 93840/113678 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...